1 ISJ

^g

'

TY OF TORONTO 0107827

I siK

- =fp_

55E[^

== '

~co

(e

2PARTMENT OF COMMERCE

U. S. COAST AND GEODETIC SURVEY

O. H. TITTMANN SUPERINTENDENT

GEODESY

TRIANGULATION ALONG THE WEST COAST

OF FLORIDA

BY

CXjAREUSTCK H. SWICK Computer, TJ. S. Coast and GJ-eodetio Survey

1

SPECIAL PUBLICATION iNo. 16

(No. 16

Vim , miiw—

^ TOMV^y

WASHINGTON

GOVERNMENT PRINTING OFFICE

1913

DEPARTMENT OP COMMERCE

U. S. COAST AND GEODETIC SURVEY o. h. tittup j±nn

SUPERINTENDENT

GEODESY

TRIANGULATION ALONG THE WEST COAST

OF FLORIDA

BY

CLARENCE H. SWICK Computer, IT. S. Coast and GJ-eodetio Survey

SPECIAL PUBLICATION No. 16

WASHINGTON

GOVERNMENT PRINTING OFFICE

1913

QB in

#473

CONTENTS.

Page.

General statement 5

The triangulation 5

Adjustment of the triangulation 6

The United States Standard Datum 7

Table of positions:

Cape Sable to San Carlos Bay 11

Caloosahatchee River to Charlotte Harbor 12

Gasparilla Sound to Sarasota Bay 18

Tampa Bay 21

Boca Ceiga Bay to Clearwater Harbor 27

Gainesville to Clearwater Harbor 30

Cedar Keys to St. Marks River 35

St. Marks River to St. Andrews Sound 38

St. Andrews Bay 45

Choctawhatchee Bay to St. Andrews Bay 47

Santa Rosa Sound 49

Pensacola Bay 52

Perdido Bay 57

Descriptions of stations:

Cape Sable to San Carlos Bay 62

Caloosahatchee River to Charlotte Harbor 65

Gasparilla Sound to Sarasota Bay 74

Tampa Bay 78

Boca Ceiga Bay to Clearwater Harbor 81

Gainesville to Clearwater Harbor 86

Cedar Keys to St. Marks River 94

St. Marks River to St. Andrews Sound 99

St. Andrews Bay 108

Choctawhatchee Bay to St. Andrews Bay 114

Santa Rosa Sound 117

Pensacola Bay 123

Perdido Bay 130

Sketches facing 136

Index 137

3

ILLUSTRATIONS.

Facing page.

1. Standard triangulation station marks 61

2. Index map showing general location of the triangulation 136

3. Index map showing the limits of each of the following sketches 136

4. Triangulation

5. Triangulation

6. Triangulation

7. Triangulation

8. Triangulation

9. Triangulation

10. Triangulation

11. Triangulation

12. Triangulation

13. Triangulation

14. Triangulation

15. Triangulation

16. Triangulation Triangulation Triangulation Triangulation Triangulation Triangulation Triangulation Triangulation Triangulation

25. Triangulation

26. Triangulation

27. Triangulation

28. Triangulation

29. Triangulation

4

Cape Sable to Mikado-Seminole 136

Mikado-Seminole to Big Marco River 136

Big Marco River to San Carlos Bay 136

Caloosahatchee River to Charlotte Harbor 136

Charlotte Harbor 136

Lemon Bay to Sarasota Bay 136

Tampa Bay 136

Boca Ceiga Bay • 136

Clearwater Harbor to Coral Rock-Southeast Point 136

Coral Rock-Southeast Point to Withlacoochee River 136

Withlacoochee River to Cedar Keys 136

Gainesville to Cedar Keys. 136

Cedar Keys to Number 2-Scaffold 136

Number 2-Scaffold to Triton-Clearwater Creek 136

Triton-Clearwater Creek to St. Marks River 136

St. Marks River to St. George Sound 136

St. George Sound 136

Apalachicola Bay to St. Josephs Bay 136

St. Josephs Bay to St. Andrews Sound 136

St. Andrews Bay 136

St. Andrews base to Blue Mountain 136

Choctawhatchee Bay 136

eastern end of Santa Rosa Sound 136

western end of Santa Rosa Sound and southern part of Pensacola Bay 136

Escambia Bay and East Bay : 136

Perdido Bay 136

TRIANGULATION ALONG THE WEST COAST OF FLORIDA.

By Clarence H. Swick,

Computer, U. S. Coast and Geodetic Survey.

GENERAL STATEMENT.

The main purpose of this publication is to give to the engineering public as complete a list as possible of the results of triangulation along the west coast of Florida from Cape Sable to Alabama and from the inland town of Gainesville to the coast at Cedar Keys, in all more than 1150 triangulation stations. This, together with Appendix 6, United States Coast and Geodetic Survey Report for 191 1,1 gives all the available triangulation data for the State of Florida.

This triangulation presents no unusual geodetic features, is not of primary degree of accu- racy, was done under methods now largely superseded (except that which was done since 1900), and consequently offers little or no material for discussion. If its scientific value be small, on the other hand its practical value is large, for it offers to the engineer and to the geographer the positions of a large number of points determined trigonometrically and all correlated on one geodetic datum, known as the United States Standard Datum. (See p. 7.)

The accuracy of this triangulation is comparable with that of other coast triangulation in the United States; that is, it is about the same as the accuracy of triangulation usually classed as tertiary. The probable error of a length is less than 1 part in 5000 except between side points or between intersection points near together determined from distant stations, where the error is likely to exceed this amount.

THE TRIANGULATION.

This publication is mainly taken up with the results of the triangulation, namely, the list of geographic positions, the descriptions of the stations, and the sketches. The details of the field and office work which are always included in United States Coast Survey publications of primary triangulation are not of sufficient importance in work of this character to warrant publication. The index at the end of the book used in connection with the sketches makes it possible to obtain easily and quickly the data for any station or group of stations. As complete descriptions as are available are given for the principal points and for part of the supplementary points. Nearly all of the remaining stations are sufficiently described by their names, as, for example, "Tampa Bay Hotel, north tower."

The observations involved in this triangulation extend over a period of more than 60 years. Ordinarily, triangulation which has been done many years prior to the date of the publication of its results is largely reduced in value to the engineer by the loss of stations, either through the destroying agencies of time or the building agencies of man. In many cases, due to changes in the surrounding topography or to the destruction of the surface and reference marks, the engineer might fail to recover a station which still exists. If he dug at the proper place he would discover the mark and recover the station, but without the guidance of the reference marks or of the local topography he can recover it only by locating a point in the vicinity by means of

1 Triangulation along the East Coast of Florida and on the Florida Keys, by Hugh C Mitchell.

6 U. S. COAST AND GEODETIC SURVEY — SPECIAL PUBLICATION NO. 16.

triangulation carried from the nearest available triangulation stations. After determining the geographic position of the new point a distance and direction can be computed to the position of the old station and measurements made to the spot indicated by the computations as its probable location.

A considerable portion of the triangulation along the west coast of Florida has been revised in recent years. Many of the old stations, the localities of which were visited, were not recovered. Some of them, it was determined, have been lost or destroyed. Others, it seemed probable, still existed, but the expense of a complete search was too great and the chances of recovery too small to warrant the search. Many stations, however, were recovered, and they were usually re-marked in a more permanent manner. Their descriptions were revised and additions made to them where necessary.

At several places along the coast, principally in the bays and harbors, new triangulation has been executed over the areas covered by the old triangulation. The reason for this apparent duplication is that not enough of the old stations could be recovered in those particular regions to control the hydrography or the topography. In every case the new work starts from two or more of the old stations which were recovered and is tied to as many more of the old stations as it was possible to locate. In St. Andrews Bay and the upper part of Tampa Bay, where nearly all of the old stations have been lost, only those recovered and the new stations have been included in this publication. At other places along the coast, as, for example, in Boca Ceiga Bay, practically all of the old stations have been lost and new triangulation has been executed over the same areas, but it has been necessary to use the old work in carrying forward the United States Standard Datum, and so the results have been included in this book.

It will be seen from the sketches at the end of this publication that the triangulation con- sists to a large extent of a chain of quadrilaterals with all angles observed. Along two different sections of the coast, from Cape Romano to San Carlos Bay and from St. Andrews Bay to a point opposite the eastern end of Choctawhatchee Bay, beach measures made with long wires were substituted for the triangulation. The horizontal angles were measured and the positions were carried ahead by means of these angles and the measured lengths of the traverse. Between Gainesville and the coast at Cedar Keys a traverse of a high degree of accuracy was measured along the railroad. This section of traverse, together with the section from Gainesville to Baldwin, published in Appendix 6, United States Coast and Geodetic Survey Report for 1911, serves to connect the northern end of the triangulation on the east coast of Florida with the west coast triangulation, and completes the loop around the southern and eastern part of the State.

ADJUSTMENT OF THE TRIANGULATION.

As stated in Appendix 6, Report for 1911, the positions of certain points in Fernandina were held fixed from an adjustment extending from the Eastern Oblique Arc near Atlanta, Ga. The triangulation from Fernandina to Baldwin, part way across the Florida peninsula, and the traverse from Baldwin to the west coast at Cedar Keys, were held fixed after having been adjusted for discrepancies of triangle closures, ratios of sides, and lengths, and having been made to conform to observed azimuths. No discrepancies developed in closing a loop were distributed in this part of the triangulation as it was considered to be of a much higher degree of accuracy than other parts of the loop.

The chain of triangulation (including a small section of measured traverse) along the Gulf coast between Cedar Keys and the Eastern Oblique Arc at Mobile Bay, was then adjusted, holding fixed the triangulation at Mobile Bay, and at Cedar Keys, and all observed azimuths and measured lengths along the coast.

In a similar manner the chain of triangulation, and sections of measured traverse extending down the east coast of Florida, around Cape Sable, and up the west coast to Cedar Keys was adjusted, holding fixed the triangulation at Fernandina, and at Cedar Keys, and all observed azimuths, and measured lengths.

TRIANGULATION ALONG THE WEST COAST OF FLORIDA. 7

In each of these two pieces of triangulation all observed azimuths were held fixed and the triangulation adjusted to them, it being reasonably certain that the observed azimuths were superior to any that might be computed through the triangulation. All measured lengths were also held. The discrepancies remaining in the triangulation after all conditions noted above had been satisfied were distributed along the weaker sections of the triangulation by means of latitude and longitude equations, it being believed that the character of the triangulation war- ranted this, and that the corrections fell close to where they belonged. This also made con- siderable saving in the computation.

THE UNITED STATES STANDARD DATUM.1

All of the positions and azimuths have been computed upon the Clarke spheroid of 1866, as expressed in meters, which has been in use in the Coast and Geodetic Survey for many years.

After a spheroid has been adopted and all the angles and lengths in a triangulation have been fully fixed, it is still necessary, before the computation of latitudes, longitudes, and azi- muths can be made, to adopt a standard latitude and longitude for a specified station and a standard azimuth of a line from that station. For convenience, the adopted standard position (latitude and longitude) of a given station, together with the adopted standard azmiuth of a fine from that station, is called the geodetic datum.

The primary triangulation in the United States was commenced at various points, and existed at first as a number of detached portions in each of which the geodetic datum was neces- sarily dependent only upon the astronomic stations connected with that particular portion. As examples of such detached portions of triangulation there may be mentioned the early triangu- tation in New England and along the Atlantic coast, a detached portion of the transcontinental triangulation centering on St. Louis and another portion of the same triangulation in the Rocky Mountain region, and three separate portions of triangulation in California, in the latitude of San Francisco, in the vicinity of Santa Barbara Channel, and in the vicinity of San Diego. With the lapse of time these separate pieces have expanded until they have touched or overlapped.

The transcontinental triangulation, of which the office computation was completed in 1899, joins all of the detached portions mentioned and makes them one continuous triangulation. As soon as this took place the logical necessity existed of discarding the old geodetic data used in these various pieces and substituting one datum for the whole country, or at least for as much of the country as is covered by continuous triangulation. To do this is a very heavy piece of work, and involved much preliminary study to determine the best datum to be adopted. On March 13, 1901, the Superintendent adopted what is now known as the United States Standard Datum, and it was decided to reduce the positions to that datum as rapidly as possible. The datum adopted was that formerly in use in New England, and therefore its adoption did not affect the positions which had been used for geographic purposes in New England and along the Atlantic coast to North Carolina, nor those in the States of New York, Pennsylvania, New Jersey, and Delaware. The adopted datum does not agree, however, with that used in The Transcontinental Triangulation and in The Eastern Oblique Arc of the United States, pub- lications which deal primarily with the purely scientific problem of the determination of the figure of the earth, and which were prepared for publication before the adoption of the new datum.

As the adoption of such a standard datum is a matter of considerable importance, it is in order here to explain the desirability of this step more fully.

The main objects to be attained by the geodetic operations of the Coast and Geodetic Survey are, first, the control of the charts published by the Survey; second, the furnishing of geographic positions (latitudes and longitudes), of accurately determined elevations, and of distances and azimuths, to officers connected with the Coast and Geodetic Survey and to other organizations; third, the determination of the figure of the earth. The first two of these objects are purely practical; the third is purely scientific. For the first and second objects

i After the manuscript for this publication had gone to the printer, the United States Standard Datum was adopted by Canada and Mexico. On account of its international character it will hereafter be known as the North American Datum.

8 U. S. COAST AND GEODETIC SURVEY — SPECIAL PUBLICATION NO. 16.

it is not necessary that the reference spheroid should be accurately that which most closely fits the geoid within the area covered, nor that the adopted geodetic datum should be abso- lutely the best that can be derived from the astronomic observations at hand. It is simply desirable that the reference spheroid and the geodetic datum adopted shall be, if possible, such a close approximation to the truth that any correction which may hereafter be derived from the observations which are now or may become available shall not greatly exceed the probable errors of such corrections. It is, however, very desirable that one spheroid and one geodetic datum be used for the whole country. In fact, this is absolutely necessary if a geodetic survey is to perform fully the function of accurately coordinating all surveys within the area which it covers. This is the most important function of a geodetic survey. To perform this function it is also highly desirable that when a certain spheroid and geodetic datum have been adopted for a country they should be rigidly adhered to without change for all time, unless shown to be largely in error.

In striving to attain the third object, the determination of the figure of the earth, the conditions are decidedly different. This problem concerns itself primarily with astronomic observations of latitude, longitude, and azimuth, and with the geodetic positions of the points at which the astronomic observations were made, but is not concerned with the geodetic positions of other points fixed by the triangulations. The geodetic positions (latitudes and longitudes) of comparatively few points are therefore concerned in this problem. However, in marked contrast to the statements made in preceding paragraphs, it is desirable in dealing with this problem that, with each new important accession of data, a new shperoid fitting the geoid with the greatest possible accuracy, and new values of the geodetic latitudes, longi- tudes, and azimuths of the highest degree of accuracy, should be derived.

The United States Standard Datum was adopted with reference to positions furnished for geographic positions, but has no reference to the problem of the determination of the figure of the earth. It is adopted with reference to the engineer's problem of furnishing standard positions, and does not affect the scientist's problem of the determination of the figure of the earth.

The principles which guided in the selection of the datum to be adopted were: First, that the adopted datum should not differ widely from the ideal datum for which the sum of the station errors in latitude, longitude, and azimuth should each be zero; second, it was desirable that the adopted datum should produce minimum changes in the publications of the Survey, including its charts; and, third, it was desirable, other things being equal, to adopt that datum which allowed the maximum number of positions already in the office registers to remain unchanged, and therefore necessitated a minimum amount of new computation. These considerations led to the adoption as the United States Standard of the datum which had been in use for many years in the northeastern group of States and along the Atlantic coast as far as North Carolina.

An examination of the station errors available in 1903, on the United States Standard Datum, at 246 latitude stations, 76 longitude stations, and 152 azimuth stations, scattered widely over the United States from Maine to Louisiana and to California, indicated that this datum approaches closely the ideal with which the algebraic sum of the station errors of each class would be zero.1

The adopted United States Standard Datum, upon which the positions and azimuths given in this publication depend, may be defined in terms of the position of the station Meades Ranch as follows:

o / //

0=39 13 26.686 >t=98 32 30.506 a to Waldo =75 28 14.52

i This is further borne out in the reduction of 765 astronomic stations in connection with the "Supplementary investigation in 1909 of the figure of the earth and isostasy," by J. F. Hayford, published by the Coast and Geodetic Survey.

TRIANGULATION ALONG THE WEST COAST OF FLORIDA. 9

Points are then said to be upon the United States Standard Datum when they are con- nected with the station Meades Ranch by a continuous triangulation, through which the corresponding latitudes, longitudes, and azimuths have been computed on the Clarke spheroid of 1866, as expressed in meters, starting from the above data.

The principal lists of geographic positions heretofore published upon the United States Standard Datum throughout the whole United States are contained in the following publica- tions of the Coast and Geodetic Survey and of other organizations :

Appendix 8 of the Report for 1885, positions in Massachusetts and Rhode Island; Appendix 8 of the Report for 1888, positions in Connecticut; Appendix 8 of the Report for 1893, positions in Pennsylvania, Delaware, and Maryland; Appendix 10 of the Report for 1894, positions in Massachusetts; Appendix 6 of the Report for 1901, positions in Kansas and Nebraska; Appendix 3 of the Report for 1902, positions in Kansas, Missouri, Nebraska, and Colorado; Appendix 4 of the Report for 1903, positions in Kansas, Oklahoma, and Texas; Appendix 9 of the Report for 1904, positions in California; Appendix 5 of the Report for 1905, positions in Texas; Appendix 3 of the Report for 1907, positions in California; Appendix 5 of the Report for 1910, positions in California; Appendix 4 of the Report for 1911, positions in Nebraska, Minnesota, North Dakota, and South Dakota; Appendix 5 of the Report for 1911, positions in Texas; Appendix 6 of the Report for 1911, positions in Florida; Special Publication No. 11, positions in Texas, New Mexico, Arizona, and California; Special Publication No. 13, positions in California, Oregon, and Washington; Appendix EEE, pages 2905-3031, Annual Report of the Chief of Engineers, 1902, positions of points on and near the Great Lakes; in publica- tions of the Massachusetts Harbor and Land Commission; and in various bulletins of the United States Geological Survey.

TABLES OF POSITIONS

In the tables of positions the latitude and longitude of each point are given on the United States Standard Datum (see p. 7), also the length and azimuth of each line observed over, whether in one or both ways. This is, in a way, a duplication, as the lengths and azimuths are implicity contained in the corresponding latitudes and longitudes, while, on the other hand, from the latitude and longitude of a single point all the remaining latitudes and longitudes may be derived by means of the given lengths and azimuths. The amount of computation involved in transforming one of these systems of coordinates into the other is so great that it is necessary to have the double system for the convenient use of the tables. Along with the latitude and longitude of each point the lengths and azimuths are given of lines from that point to other points of the triangulation. No lengths or azimuths are repeated, and for a given line the length and azimuth will generally be found opposite the position of the last mentioned of the two stations involved.

For the convenience of the draftsman a column of "seconds in meters" is given, in which is placed the length (in meters) of each small arc of a meridian or parallel corresponding to the seconds of the given latitude or longitude. To facilitate further the use of the tables, a column is given of the logarithms of the lengths. It must be remembered that it is the loga- rithm which is derived first in the computation, the lengths given in this table being then derived from the corresponding logarithms.

The rule followed in recent publications of this Office has been to give latitudes and longi- tudes to thousandths of seconds for all points the positions of which are fixed by fully adjusted triangulation. Points, the positions of which are given to hundredths of seconds only, are marked by a footnote as being without check. This note means that the object was pointed on from only two triangulation stations and that therefore an error in either pointing or in the identification of the object from either occupied station would not be detected in the computation.

In the columns giving azimuths, distances, and logarithms of distances the accuracy is indicated to a certain extent by the number of decimal places given, it being understood that in each case two doubtful figures are given. In some cases there is very little doubt of the correctness of the second figure from the right, while in a few cases some doubt may be cast on the third figure from the right.

These tables may be conveniently consulted by using as finders the sketches and index at the end of this publication. In the third column of the index will be found for each point a reference to the page on which its description will be found, and in the fourth column the number of the sketch on which it appears.

For the convenience of those who wish to convert the distances given in the table from meters into feet the following conversion table is here inserted:

Meters	Feet	Feet	Meters
1	3. 280833	1	0. 3048006
2	6. 561667	2	0. 6096012
3	9. 842500	3	0. 9144018
4	13. 123333	4	1. 2192024
5	16. 404167	5	1. 5240030
6	19. 685000	6	1. 8288037
7	22. 965833	7	2. 1336043
8	26. 246667	8	2. 4384049
9	29. 527500	9	2. 7432055
10	32. 808333	10	3. 0480061

10

TEIANGULATION ALONG THE WEST COAST OF FLOKIDA. CAPE SABLE TO SAN CARLOS BAY

11

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Principal points Cape Sable west base 1855	25 07 19.512 81 04 08. 686	600.2 243.3	249 52 59. 3	69 54 30. 8	Cape Sable east base	Meters 6431. 59	3. 808318
Cape Sable latitude station 1886	25 06 59.582 81 05 13. 394	1833. 3 375.5	251 18 22. 8	71 18 50. 3	Cape Sable west base	1913.7	3.281876
Quick 1886	25 04 23.696 81 06 51. 199	729.1 1434. 8	209 44 11.2 220 04 45. 2 288 40 42. 0	29 44 52. 7 40 05 54. 1 108 43 05. 8	Cape Sable astronomic station Cape Sable west base Sandy Key 2	5524. 2 7071. 1 10046.0	3. 742273 3. 849489 4.001992
Palm Point 1886	25 09 28. 230 81 08 23.371	868.6 654.6	310 40 05.3 344 35 14. 9	130 41 26.0 164 35 54.0	Cape Sable astronomic station Quick	7016. 9 9719. 6	3. 846148 3. 987650
Cates 1886	25 07 21. 785 81 10 56. 854	670.3 1592. 7	227 50 46. 6 274 02 27. 7	47 51 51.8 94 04 53. 5	Palm Point Cape Sable astronomic station	5798. 2 9646.2	3. 763295 3.984358
Northwest Cape 1887	25 14 05.088 81 10 24.931	156.6 697.8	338 12 56. 1 4 07 19. 2	158 13 47. 8 184 07 05.6	Palm Point Cates	9173. 5 12441.6	3.962537 4.094877
Nell 1887	25 13 52. 674 81 13 55.942	1620. 8 1565.7	266 17 12. 7 311 07 46.6	86 18 42. 6 131 10 08. 2	Northwest Cape Palm Point	5918.3 12365.6	3. 772200 4. 092216
Shark 1887	25 16 11.942 81 10 07. 309	367.5 204.5	7 12 05. 3 56 12 03. 9	187 11 57.8 236 10 26. 4	Northwest Cape Nell	3934. 3 7700.8	3. 594871 3. 886534
Pinafore 1887	25 16 20. 425 81 13 46. 261	628.3 1294. 3	272 25 35. 9 306 27 26. 1	92 27 09. 4 126 28 52. 0	Shark Northwest Cape	6131.9 7006.0	3. 787595 3. 845473
Rodgers 1887	25 23 13.914 81 09 05. 443	428.1 152.2	7 35 38. 3 31 42 08.0	187 35 11.8 211 40 08. 4	Shark Pinafore	13099. 0 14951.9	4. 117237 4. 174695
Lucknow 1887	25 22 03. 383 81 12 53. 195	104.1 1487. 2	251 09 51.1 336 46 05. 7	71 11 28.7 156 47 16.6	Rodgers Shark	6726. 7 11767.2	3. 827805 4. 070674
Pig 1887	25 30 26. 523 81 12 33. 174	816.1 926.4	336 25 48. 7 2 04 14. 3	156 27 17. 9 182 04 05. 7	Rodgers Lucknow	14522. 0 15492. 1	4. 162026 4. 190110
Tycoon 1887	25 28 56. 644 81 16 48. 506	1743.0 1354.9	248 47 12. 7 309 09 14. 2	68 49 02. 6 129 12 33. 1	Fig Rodgers	7648. 7 16692. 6	3.883585 4. 222524
Seminole 1887	25 36 49. 779 81 16 20.915	1531.8 583.5	331 39 35.2 3 01 48. 1	151 41 13.5 183 01 36. 2	Fig Tycoon	13397.5 14579.3	4. 127025 4. 163737
Mikado 1887	25 ."4 42. 205 81 19 40. 751	1298. 7 1137.4	234 50 38. 7 303 21 47.5	54 52 05. 0 123 24 51. 9	Seminole Fig	6819. 7 14296.6	3. 833764 4. 155232
Reef 1887	25 41 56.512 81 19 23. 633	1738. 9 658.9	331 37 22. 2 2 02 50. 4	151 38 41.3 182 02 43. 0	Seminole Mikado	10726. 6 13372. 8	4.030408 4. 126223
Alpha 1887	25 38 59.356 81 23 48. 175	182(3. 5 1343. 8	233 31 18.9 287 41 42. 1	53 33 13. 5 107 44 55.6	Reef Seminole	9172.9 13098. 9	3. 962509 4. 117234
Pavilion Key 1887	25 41 26.968 81 21 20. 767	829.8 579.0	315 32 41.0 347 22 03. 1 42 09 18.8	135 34 50. 9 167 22 46. 5 222 08 14. 9	Seminole Mikado Alpha	11945.8 12763. 8 6126. 3	4. 077215 4. 105980 3. 787200
Freeland 1887	25 44 58. 021 81 23 05. 841	1785.4 162.8	312 01 40.5 335 43 03. 8 6 06 24. 5	132 03 17.0 155 43 49. 4 186 06 06. 1	Reef Pavilion Key Alpha	8340. 5 7124.5 11099.7	3.921194 3. 852754 4.045312
Iroquois 1887	25 45 07. 879 81 30 33. 648	242.4 937.8	271 21 55. 4 293 46 03. 1	91 25 09.9 113 50 03. 1	Freeland Pavilion Key	12483. 8 16844. 8	4.0&6345 4. 226466
Coral 1887	25 48 05. 362 81 28 08. 716	165.0 242.8	304 19 08.6 36 29 16. 9	124 21 20.3 216 28 13.9	Freeland Iroquois	10220. 2 6792. 3	4.009461 3.832019
Pontiac 1887	25 43 40. 704 81 25 58.028	1252.5 1617.6	155 54 55. 9 243 37 11.5 298 00 50. 1	335 53 59. 0 63 38 26. 3 118 02 50. 4	Coral Freeland Pavilion Key	8921.2 5356. 6 8757. 0	3.950425 3. 728891 3.942357
Fire 1887	25 49 54. 745 81 30 47. 702	1684. 6 1328.5	307 13 43. 1 357 27 34. 0	127 14 52.3 177 27 40. 1	Coral Iroquois	5562. 4 8836.2	. 3. 745263 3.946265
Gomez 1887	25 47 00.012 81 33 36. 148	0.4 1007.2	221 05 58. 8 257 32 53. 7	41 07 12.2 77 35 16.2	Fire Coral	7136.4 9341.2	3. 853482 3. 970401
Horse Key 1887	25 51 19.345 81 33 57.212	595.3 1593. 0	296 14 44. 4 301 34 15.5 355 47 38. 4	116 16 07.0 121 36 47. 3 175 47 47.5	Fire Coral Gomez	5884.6 11394.7 8001.8	3. 769717 4.056704 3. 903190
Flossy 1887	25 48 05. 826 81 36 57.874	179.3 1612. 2	220 11 05.4 251 58 11.7	40 12 24. 1 72 00 52. 9	Horse Key Fire	7796.2 10841. 8	3. 891881 4.035103
Coon Key 1887	25 53 50. 285 81 38 08.031	1547. 4 223.6	303 36 56. 9 349 33 10. 7	123 38 46. 4 169 33 41.3	Horse Key Flossy	8386.5 10778. 4	3.923582 4. 032554
Cape Romano 1885	25 50 37. 382 81 40 58. 150	1150.3 1619.3	218 34 32.4 263 41 16. 7 304 51 26.5	38 35 46. 6 83 44 20. 2 124 53 11. 1	Coon Key Horse Key Flossy	7594. 1 11792.5 8157. 1	3. 880477 4.071605 3.911534

12

U. S. COAST AND GEODETIC SURVEY — SPECIAL PUBLICATION NO. 16. CAPE SABLE TO SAN CARLOS BAY— Continued

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Principal points — Contd			. , „	. , „		Meters
Johnson 1887	25 54 46.326 81 41 40.442	1425.5 1125.5	286 14 56. 1 351 15 35.6	106 16 28. 9 171 15 54. 1	Coon Key Cape Romano	6158.5 7750.6	3.789473 3.889335
Caximbas 1885	25 54 35. 300 81 43 47.597	1086.2 1324.7	264 30 56. 2 327 11 40.8	84 31 51.8 147 12 54. 8	Johnson Cape Romano	3555.2 8709.5	3.550862 3.939994
Big Marco 1885	25 57 35.230 81 44 59. 737	1084.1 1661.9	340 04 04.4	160 04 35.9	Caximbas	5889.6	3.770086
Little Marco 1885	26 00 56.409 81 45 57.311	1735.9 1593. 7	345 29 38. 8	165 30 04.0	Big Marco	6394.6	3.805816
Johns Pass 1885	26 04 14.818 81 47 38. 752	456.0 1077. 1	335 12 08. 5	155 12 53.0	Little Marco	6725.5	3.827726
Gordons Pass 1885	26 05 26. 338 81 48 03.400	810.5 94.5	340 35 02.4 342 42 35. 3	160 36 23.0 162 42 46. 1	Big Marco Johns Pass	15370.6 2305.1	4. 186692 3.362684
Doctors Pass 1885	26 10 35.069 81 48 53. 132	1079.2 1475. 5	351 43 25.0	171 43 46.9	Gordons Pass	9600.7	3.982303
Wiggins Pass 1884	26 17 21.790 81 49 53.399	670.6 1481.4	352 23 03.0	172 23 29.6	Doctors Pass	12627.8	4. 101327
Big Hickory 1884	26 21 17. 142 81 51 22. 770	527.6 631.3	341 06 08.0	161 06 47.6	Wiggins Pass	7655.2	3.883959
Big Carlos 1884	26 24 18. 163 81 53 51.861	559.0 1437.3	323 25 10.8	143 26 17.0	Big Hickory	6936.6	3.84U44
Little Carlos 1884	26 23 21. 158 81 52 53.042	651.2 1470.3	326 44 26.3 137 06 09. 8	146 45 06. 4 317 05 43. 7	Big Hickory Big Carlos	4563.9 2394.9	3.659334 3.379286
Oyster Key 1884	26 22 18.377 81 50 23. 403	565.6 648.7	41 08 18.8 114 59 01.6	221 07 52.4 294 57 55. 1	Big Hickory Little Carlos	2502.1 4576.0	3.398302 3.660486
Bowditch Point 2 1883	26 27 12.309 81 57 28.967	378.8 802.4	311 41 00.6	131 42 37.2	Big Carlos	8056.8	3.906164
Mound Key 1884	26 25 15.693 81 51 49.673	483.0 1376. 5	336 19 55. 6 26 29 21.0 62 24 16.5 110 54 55.7	156 20 33. 9 206 28 52. 8 242 23 22.3 290 52 24.9	Oyster Key Little Carlos Big Carlos Bowditch Point 2	5957.8 3938.1 3821.1 10062.6	3.775084 3. 595289 3.582192 4.002712
Point Ybel 2 1883	26 27 14.385 82 00 48.973	442.7 1356.7	270 38 55.6 295 06 41.2	90 40 24.8 115 09 46.9	Bowditch Point 2 Big Carlos	5541.2 12766.9	3.743607 4.106086
Summerlin 1884	26 29 22.290 82 00 45.021	686.0 1246.9	306 21 49. 7 1 35 36. 0	126 23 17.1 181 35 34. 2	Bowditch Point 2 Point Ybel 2	6744.8 3937.8	3.828972 3.595256

CALOOSAHATCHEE RIVER TO CHARLOTTE HARBOR

Principal points
Middle Point 1858	26 28 09. 145 82 03 35. 122	281.4 972.9	244 27 03. 7 290 06 00.0	64 28 19.6 110 07 14.0	Summerlin Point Ybel 2	5221.5 4901.4	3.717793 3. 690318
Sword Point 1861	26 31 28. 730 82 02 28.511	884.2 789.3	323 37 25.2 16 43 12. 4	143 38 11.4 196 42 42. 7	Summerlin Middle Point	4832.6 6413.3	3.684180 3.807082
I'unta Rasa 1859	26 29 12. 127 82 00 48.081	373.2 1331.7	67 16 45. 9 146 31 16.4	247 15 31.4 326 30 31. 6	Middle Point Sword Point	5016.2 5040.6	3.700376 3.702483
South End 1884	26 29 48. 102 82 03 25.846	1480.4 715.7	207 08 16. 6 280 06 09.1 317 25 23.0	27 08 42. 2 100 07 20. 9 137 26 32. 9	Sword Point Summerlin Point Ybel 2	3480.1 4524.2 6423.3	3.541590 3.655538 3. 807759
Catoosa 1860	26 29 32.518 82 03 19. 451	1000.8 538.6	201 31 14.0 9 36 08.7	21 31 36.7 189 36 01.7	Sword Point Middle Point	3844.6 2602.3	3.584850 3.415352
White * 1860	26 32 09. 296 82 04 09.934	286.1 275.0	293 57 51.6 344 18 20. 1	113 68 36.9 164 18 39. 8	Sword Point South End	3072.9 4513.5	3.487651 3.654515
Sanibel east base 1858	26 26 51. 149 82 01.21.022	1574. 1 582.3	122 52 36. 1 191 52 29. 4	302 51 36. 3 11 52 44. 1	Middle Point Punta Rasa	4422.9 4433.5	3.645705 3.646751
Sanibel west base 1858	26 25 58.014 82 03 08.331	1785.4 230.8	169 34 48. 4 241 10 58.3	349 34 36.5 61 11 46. 1	Middle Point Sanibel cast base	4103.25 3393.2	3.613128 3.530605
Sanibel 1858	26 25 51.855 82 06 48.894	1595.8 1354.8	231 47 00. 7 268 12 35. 6	51 48 27.0 88 14 13.8	Middle Point Sanibel west base	6831.6 6114.4	3.834520 3.786356
Havelock 1858	26 30 05.720 82 06 10.078	176.0 279.1	309 53 04.5 7 50 18. 7	129 54 13.6 187 50 01.4	Middle Point Sanibel	5593.6 7886.4	3. 747695 3.896877
Blind Pass 1858	26 28 51. 801 82 11 07.352	1594.2 203.6	254 32 06.9 307 42 14. 6	74 34 19. 5 127 44 09. 7	Havelock Sanibel	8541.3 9051.7	3.931524 3.956730
Captiva 1858	26 33 29. 591 82 12 19.539	910.7 540.8	301 30 07.8 346 60 12.8	121 32 52.8 166.50 45.0	Havelock Blind Pass	11999.5 8779.6	4.079164 3.943474

TRIANGULATION ALONG THE WEST COAST OF FLORIDA. CALOOSAHATCHEE RIVER TO CHARLOTTE HARBOR— Continued

13

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Principal points — Contd Lucknow 1858	26 35 31.554 82 08 03. 721	971.1 103.0	342 34 33.8 62 05 02. 2	162 35 24. 6 242 03 07. 7	navelock Captiva	Meters 10509.5 8013.0	4.021584 3.903797
Boca Captiva 1859	26 36 40. 539 82 13 28. 750	1247. 6 795.3	283 15 47.6 341 56 40. 5	103 18 13.1 161 57 11.5	Lucknow Captiva	9240.1 6180.8	3.965675 3. 791043
Bocillas 1859	26 42 12.381 82 10 08.486	381.0 234.6	344 21 53.2 28 28 57.2	164 22 49. 2 208 27 27. 4	Lucknow Boca Captiva	12809.3 11617.7	4. 107527 4.065122
Boca Grande 1859	26 43 00. 210 82 15 48. 293	6.5 1334.8	278 53 07. 1 341 42 58. 1	98 55 39. 8 161 44 00. 7	Bocillas Boca Captiva	9507.5 12305. 4	3.978065 4.090096
Oso 1858	26 46 57. 017 82 12 53. 344	1753. 7 1473. 6	332 30 47. 6 33 34 03. 1	152 32 01.8 213 32 44. 4	Bocillas Boca Grande	9873.8 8745. 6	3.994485 3.941790
El Gabo 1859	26 47 01. 856 82 08 54. 505	57.1 1505.6	12 55 43.3 56 59 03. 1 88 43 18. 1	192 55 10. 0 236 55 56.9 268 41 30. 5	Bocillas Boca Grande Oso	9140.5 13639. 7 6599.4	3.960972 4. 134804 3.819502
Mound 1860	26 48 19. 653 82 10 47. 540	604.8 1313. 0	307 28 36. 1 53 48 26. 7 112 54 00.3	127 29 27.0 233 47 30. 0 292 52 27.4	El Gabo Oso Flat	3934. 5 4306.1 6169.3	3. 594895 3.634088 3. 790233
Torrey 1859	26 46 34.660 82 03 42.276	1066.7 1167.9	52 55 23.6 95 33 43.9	232 52 29.8 275 31 23.2	Bocillas El Gabo	13381.5 8665.8	4.126504 3.937807
Punta Gorda 1859	26 53 32.734 82 05 32.716	1007.5 902.9	346 39 36.8 24 51 48.0 42 04 16.6	166 40 26.7 204 50 16.9 222 01 54.5	Torrey ElGabo Mound	13223.4 13257.5 12976.6	4.121343 4.122463 4.113160
Pelican 1859	26 50 14.528 82 03 46.842	447.1 1293.4	55 06 31.7 154 24 28.5	235 04 12.9 334 23 40.6	El Gabo Punta Gorda	10361.4 6764.1	4.015418 3.830213
Dana 1859	26 51 18.920 82 09 25.938	582.3 716.0	237 22 33.3 281 55 51.7 312 38 55.9	57 24 18.7 101 58 24.8 132 41 31.0	Punta Gorda Pelican Torrey	7642.1 9569.5 12907.7	3.883211 3.980888 4.110850
Locust Point 1860	26 55 46.553 82 08 04.472	1432.8 123.4	314 30 56.0 325 09 08.9 15 16 19.1	134 32 04.7 145 11 05.5 195 15 42.3	Punta Gorda Pelican Dana	5873.4 12449.2 8538.3	3.768890 4.095142 3.931369
Shoal Point 1860	26 55 28.182 82 09 15.909	867.4 438.9	299 58 05.0 316 43 30.0 2 04 01.3	119 59 46.0 136 45 58.9 182 03 56.8	Punta Gorda Pelican Dana	7110.2 13254.3 7676.5	3.851880 4.122356 3.885165
Bruce 1860	26 53 46.891 82 10 17.588	1443.2 485.3	208 37 40.4 273 09 15.9 301 11 22.6	28 38 08.3 93 11 24.7 121 14 19.3	Shoal Point Punta Gorda Pelican	3551.8 7873.7 12611.8	3.550443 3.896179 4.100776
Palmetto 1860	26 56 02.076 82 09 59. 920	63.9 1653.1	310 39 49.9 6 41 02.1	130 40 09.8 186 40 54.1	Shoal Point Bruce	1600.8 4189.1	3.204331 3.622116
Myakka 1860	26 56 10.308 82 11 02.307	317.2 64.6	278 22 13.7 293 49 26.1 344 22 45.6	98 22 41.9 113 50 14.2 164 23 05.8	Palmetto Shoal Point Bruce	1739.6 3208.9 4583.2	3.240458 3.506361 3.661166
Eureka 1860	26 54 52.170 82 05 49.846	1605.6 1375.4	42 16 30.4 74 48 14.8 101 02 39. 2 114 15 56.4	222 14 52.7 254 46 13.6 281 01 05.9 294 14 55.4	Dana Bruce Shoal Point Locust Point	8868.2 7656.4 5792.5 4074.1	3.947834 3.884027 3.762864 3.610028
Grassy Point 1860	26 57 10.702 82 05 59.440	329.4 1639.6	356 26 50.4 53 06 19.8	176 26 54.7 233 05 23.1	Eureka Locust Point	4271.8 4313.2	3.630615 3.634799
. Cooper 1860	26 55 34.162 82 05 10.080	1051.4 278.1	94 32 34.3 155 22 56.0	274 31 15.3 335 22 33.7	Locust Point Grassy Point	4826.4 3268.4	3.683621 3.514331
Live Oak Point 1860	26 57 09.496 82 03 44.074	292.3 1215.8	38 57 53.2 70 27 08.0 90 34 39.8	218 57 14.2 250 25 10.0 270 33 38. 5	Cooper Locust Point Grassy Point	3773.3 7623.4 3734.0	3.576727 3.882147 3.572169
Willow Point 1860	26 56 15.488 82 03 02.484	476.7 68.5	70 08 30.6 109 12 20.2 145 23 21.8	250 07 32. 8 289 11 00.1 325 23 03.0	Cooper Grassy Point Live Oak Point	3742.9 5168.6 2019.7	3.573203 3.713373 3.305285
Piney Point 1860	26 57 58.502 82 02 16.867	1800.6 465.2	21 38 57.4 57 54 54.7	201 38 36.7 237 54 15. 2	Willow Point Live Oak Point	3411.0 2839.0	3.532885 3.453172
New Point 1860	26 56 54.888 82 02 00.056	1689.3 1.6	54 51 08.9 98 54 44.6 166 40 37.6	234 50 40.6 278 53 57.5 346 40 30.0	Willow Point Live Oak Point Piney Point	2106.2 2904.2 2012.0	3.323497 3.463024 3.303631
Middle 1860	26 57 28.898 82 00 49.777	889.4 1373 0	61 38 10.9 82 55 49.8 110 46 40. 2	241 37 39.0 262 54 30.8 290 46 00.7	New Point Live Oak Point Piney Point	2203.1 4844.5 2569.0	3.343025 3.685245 3.409764
Trout . 1860	26 57 06.565 82 00 59.105	202.0 1630.3	91 08 46.5 126 42 04.9 200 31 15.7	271 07 31.7 306 41 29. 6 20 31 19.9	Live Oak Point Piney Point Middle	4551.2 2674.9 733.9	3.658130 3.427313 2.865659
Peace Creek 1860	26 58 18.531 82 00 38.419	570.3 1059.5	11 35 21.1 14 26 44.6 77 12 51.8	191 35 16.0 194 26 35.3 257 12 07.2	Middle Trout Piney Point	1559.3 2287. 2 2784. 2	3.192941 3.359308 3.444699

14

U. S. COAST AND GEODETIC SURVEY — SPECIAL PUBLICATION NO. 16. CALOOSAHATCHEE RIVER TO CHARLOTTE HARBOR— Continued

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Principal point*— Contd Darling 1859	o / // 26 40 51.489 82 06 44.842	1584.6 1239.9	o / tr 162 33 23.1 205 31 26.5	342 32 24.8 25 32 48.7	El Gabo Torrey	Meters 11948.5 11704.9	4.077315 4.068368
Belinda 1859	26 42 22.245 82 05 00.300	684.6 8.3	45 59 03.6 87 58 43.4 143 04 09.8	225 58 16.6 267 56 24. 9 323 02 24.4	Darling Bocillas El Gabo	4019.2 8524.5 10767.4	3.604142 3.930671 4.032112
Dorr 1861	26 40 37.841 82 05 23.496	1164.6 649.8	100 35 03.0 191 17 07.0	280 34 26.5 11 17 17.4	Darling Belinda	2288.0 3276.5	3.359458 3.515414
Matlacha 1861	26 39 25.931 82 06 17.817	798.1 492.7	164 09 29.5 214 09 43.5	344 09 19.0 34 10 09.5	Darling Dorr	2737.1 2674.7	3.437296 3.427277
Rubber 1861	26 38 43.893 82 05 46.853	1350.8 1295.8	146 30 03.2 157 47 27.8 190 26 03.4	326 29 47.7 337 47 01.8 10 26 13.9	Matlacha Darling Don-	1551.5 4241.7 3565.8	3.190752 3.627541 3.552162
Gull 1861	26 39 11. 175 82 04 52.313	343.9 1447.1	60 54 03. 6 100 52 36. 3 134 46 55. 4	240 53 39. 1 280 51 50. 2 314 46 04.9	Rubber Matlacha Darling	1726.3 2407.8 4383.3	3.237120 3.381626 3.641805
Owl 1861	26 37 22. 993 82 05 06. 765	707.6 187.2	155 59 47. 1 186 50 42. 0	335 59 29. 1 6 50 48. 5	Rubber Gull	2725.5 3353.3	3.435452 3.525475
Meridian 1860	26 36 57. 538 82 03 08. 498	1770. 7 235.1	103 28 23. 5 145 05 03.0	283 27 30. 5 325 04 16.5	Owl Gull	3364.2 5016. 1	3.526876 3. 700362
Lumber 1860	26 35 54. 711 82 03 52.366	1683.7 1448. 8	142 51 28. 4 212 06 46. 7	322 50 55. 1 32 07 06. 4	Owl Meridian	3408.6 2282. 9	3.532574 3.358486
Deer 1860	26 35 42. 364 82 02 46. 969	1303.7 1299.7	101 51 51.3 165 33 48. 7	281 51 22.0 345 33 39. 1	Lumber Meridian	1848.9 2389.0	3.266921 3.378217
Narrows 1860	26 34 53. 667 82 04 07. 731	1651.3 213.9	192 44 54. 1 236 08 33. 2	12 45 01.0 56 09 09.4	Lumber Deer	1926.5 2690.9	3.284768 3.429902
Grape 1860	26 33 57.331 82 03 50.327	1764.4 1392. 9	164 28 23. 1 208 28 16. 6	344 28 15.3 28 28 45.0	Narrows Deer	1799.1 3677. 4	3.255067 3.565535
Bailey 1860	26 33 38. 838 82 04 45.530	1195.2 1260.1	204 25 49. 1 249 33 57. 1	24 26 06. 0 •69 34 21. 8	Narrows Grape	2529.1 1630.4	3.402967 3.212300
Buttonwood 1860	26 32 53. 537 82 03 29. 224	1647.6 809.0	327 12 55. 3 39 36 53. 3 123 26 00. 9 163 26 01. 2	147 13 22.5 219 36 35. 2 303 25 26. 8 343 25 51.8	Sword Point White Bailey Grape	3104.4 1767. 4 2530.7 2048.4	3.491978 3. 247341 3.403246 3.311407
Brown 1860	26 39 37.281 82 09 10.533	1147.4 291.2	346 15 46.2 52 43 25.2 161 26 52. 2	166 16 16. 1 232 41 29. 4 341 26 26. 1	Lucknow Boca Captiva Bocillas	7785.0 8977. 6 5035. 1	3.891260 3.953162 3.702011
Las 1859	26 42 02. 803 82 10 43. 865	86.2 1212. 7	101 52 34.5 158 26 47. 8 198 10 14. 4 253 13 25. 2 330 02 38. 6	281 50 17. 7 338 25 49. 5 18 11 03.6 73 13 41. 1 150 03 20. 6	Boca Grande Oso El Gabo Bocillas Brown	8598.5 9736.1 9687.2 1021.5 5168.8	3. 934421 3.988386 3. 986199 3.009219 3. 713393
Oyster 1892	26 29 23. 378 82 01 06.093	719.5 168.7	353 11 13. 1 61 02 45. 7	173 11 20.7 241 01 39.3	Point Ybel 2 Middle Point	3997.9 4717. 7	3.601842 3. 673731
Bird Island 1892	26 30 45.389 82 01 57. 639	1396.9 1596.2	330 30 22.0 29 19 05.5 147 20 56. 4	150 30 45. 0 209 18 22. 1 327 20 42. 7	Oyster Middle Point Sword Point	2899.6 5514.5 1584.2	3.462336 3.741505 3. 199819
Pine 1892	26 30 37. 116 81 59 14.074	1142.3 389.7	22 51 01.3 53 49 10. 9 57 48 36. 0 93 13 40. 3	202 50 18. 8 233 48 20. 9 237 46 39. 4 273 12 27. 3	Point Ybel 2 Oyster Middle Point Bird Island	6770. 1 3843.5 8544.3 4536.2	3.830595 3. 584725 3. 931675 3.656689
A 1892	26 32 01. 989 81 59 49.669	61.2 1375. 1	14 30 18. 8 65 38 32.3	194 30 07. 9 245 37 08. 4	Pine Bird Island	2698. 0 5713. 3	3.431040 3.756884
B 1892	20 31 45.908 81 57 06. 538	1412. 8 181.0	59 03 46. 8 99 50 24. 5	239 02 49. 9 279 49 38. 5	Pine A	4117. 2 2897.7	3.614599 3.462057
Red Fish Point 1892	26 32 25. 103 81 56 51. 865	772. 6 1435.8	18 36 41.9 49 50 29. 2 77 42 08. 5	198 36 35. 3 229 49 25. 7 257 41 15.9	B Pine A	1272. 8 5152.3 3337.9	3. 104765 3.712003 3.523472
Palmetto Point 1892	20 32 23.804 81 56 15. 122	732.6 418.0	50 40 24. 3 92 15 14.6	230 40 01.3 272 14 58.2	B Red Fish Point	1840.2 1017.9	3.264856 3.007714
Harney Point 1892	26 33 32.080 81 56 12.695	987.3 351.5	1 49 53. 6 27 44 50.3	181 49 52. 5 207 44 32. 8	Palmetto Point Red Fish Point	2102.3 2329.0	3.322698 3.367172
Harris isn	26 33 39.333 81 55 14.682	1210. 5 406.5	35 44 51.8 82 05 22.5	215 44 24.8 262 04 56. 6	Palmetto Point Harney Point	2863.9 1621.1	3.456958 3.209813
c 1892	26 34 17.006 81 55 50.935	523.3 1409.7	319 07 27.6 23 32 20.0	139 07 43.8 203 32 10. 3	Harris Harney Point	1533.25 1508.1	3.185614 3. 178418
Travers 1892	26 34 09. 373 81 64 25. 969	288.5 718.4	55 34 08.2 95 42 30. 7	235 33 46. 4 275 41 52. 7	Harris C	1635.0 2363.4	3.213512 3.373545

TRIANGULATION ALONG THE WEST COAST OF FLORIDA. CALOOSAHATCHEE RIVER TO CHARLOTTE HARBOR— Continued

15

Station	Latitude and longitude	Sec ondsin meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Principal points— Contd						Meters
Four Mile Point 1892	26 36 27. 783 81 54 43. 565	855.0 1205.3	353 28 26. 8 24 51 22. 8	173 28 34. 7 204 50 52. 7	Travers C	4287. 4 4435.5	3. 632197 3. 646946
No Name 1892	26 36 12. 057 81 53 37. 544	371.0 1038. 7	19 32 20. 4 46 11 55.6 104 50 40. 6	199 31 58. 7 226 10 55. 9 284 50 10. 9	Travers C Four Mile Point	4006.3 5114.8 1889.6	3. 602745 3. 708831 3. 270377
Edison 1892	26 38 12. 536 81 53 03. 773	385.8 104.4	14 08 38. 0 40 34 44. 6	194 08 22. 9 220 33 59. 9	No Name Four Mile Point	3823.7 4244. 3	3. 582488 3. 0278C3
Hancock 1892	26 38 54. 087 81 53 44. 391	1664. 5 1227. 9	318 41 51.2 357 49 27. 6 19 58 52. 7	138 42 09. 4 177 49 30. 8 199 58 26. 2	Edison No Name Four Mile Point	1702. 2 4990.2 4790.9	3.231000 3. 698120 3. 680419
Sawmill 1892	26 39 43. 052 81 52 37. 036	1324. 9 1024. 3	14 52 03. 2 51 01 52. 4	194 51 51. 2 231 01 22. 2	Edison Hancock	2882.2 2395.9	3. 459721 3. 379477
Experimental 1892	26 39 43. 956 81 50 50. 542	1352. 8 1397. 8	52 38 37. 9 89 27 56. 1	232 37 38. 1 269 27 08. 3	Edison Sawmill	4636.0 2945.0	3. 066145 3.469090
Marsh Point 1892	26 40 35. 088 81 51 18. 672	1079. 8 516.3	333 41 42. 7 53 32 17. 1	153 41 55.3 233 31 41.9	Experimental Sawmill	1755. 4 2694. 4	3. 244375 3. 430468
Caloosa 1892	26 41 32. 858 81 49 35. 939	1011.2 993.6	31 36 54.0 57 57 42. 1	211 36 20.5 237 56 56. 0	Experimental Marsh Point	3935. 5 3350. 9	3. 594998 3. 525165
Gasparilla Island rear range L. H. 1909	26 43 01.366 82 15 39. 877	42.0 1102. 2	184 33 22. 2 300 14 22.5	4 33 36. 4 120 17 17.4	Coral Brown	10929. 3 12462. 6	4. 038593 4.095609
Useppa Inn 1909	26 39 59. 878 82 12 39. 509	1842. 8 1092.6	138 15 15.3 276 50 57. 4	318 13 54. 3 96 52 31. 2	Gasparilla Island rear range L. H. Brown	7487. 5 5820.5	3. 874337 3. 764959
Jug Point 1909	20 42 13. 745 82 10 28. 994	423.0 801.4	335 44 36. 8 41 13 18.7 99 41 53.5	155 45 12. 0 221 12 20. 1 279 39 33. 7	Brown Useppa Inn Gasparilla Island rear range L. H.	5281. 4 5470. 7 8717. 4	3. 722751 3. 738519 3. 940380
Cape Haze 1909	26 47 00. 796 82 09 10. 825	24.5 299.0	13 44 40.6 24 00 40. 8 55 35 43. 9	193 44 05. 4 203 59 13.0 235 32 48. 8	Jug Point Useppa Inn Gasparilla Island rear range L. H.	9094.6 14180. 3 13033. 3	3. 958780 4. 151684 4. 115055
Charlotte Harbor L. H. 1909	20 45 34. 920 82 06 38. 769	1074. 7 1071.2	44 03 42. 6 45 47 44. 2 72 29 43. 6 122 11 08.9	224 01 00. 5 225 40 00. 6 252 25 40. 1 302 10 00. 4	Useppa Inn Jug Point Gasparilla Island rear range L. H. Cape Haze	14343. 9 8877. 9 15682. 4 4963.1	4. 156667 3. 948308 4. 195413 3. 095753
Torrey 1909 1909	26 46 33.925 82 03 41.666	1044. 1 1151.0	54 35 54. 5 09 38 50. 2 95 13 02. 2	234 32 51. 2 249 37 30. 5 275 10 33. 9	Jug Point Charlotte Harbor L. H. Cape Haze	13813. 8 5219. 1 9130. 5	4. 140314 3. 717592 3. 960494
Mellie 1860	26 35 05. 177 82 12 23. 747	159.3 657.1	177 14 55. 7 212 32 09. 6	357 14 48. 6 32 33 36. 2	Useppa Inn Brown	9080.2 9934. 5	3. 958093 3. 997147
Demorest 1909	20 35 31.838 82 08 03. 861	979.8 106.8	137 16 11.5 166 17 00.6 83 30 25. 4	317 14 08.0 346 16 30. 7 263 28 29. 1	Useppa Inn Brown Mellie	11233.2 7775. 0 7238.0	4. 050504 3. 890734 3. 859616
Captiva Pass 1909	26 36 38. 856 82 13 24. 562	1195. 8 679.4	329 43 35. 3 191 23 07. 2 231 58 33. G	149 44 02. 5 11 23 27.4 52 00 27. 5	Mellie Useppa Inn Brown	3338. 1 0310.9 8917. 5	3. 523504 3.800091 3. 950245
Punta Gorda Hotel cupola 1909	26 56 09. 679 82 03 05. 234	297.9 144.4	225 35 23. 9 243 10 49. 3	45 30 30. 4 63 17 46. 5	Peace Creek Trout	5068.0 3895. 0	3. 753420 3. 590502
Live Oak Point 1909 1909	20 57 11. 256 82 03 46. 744	346.4 1289. 4	248 15 15. 1 271 46 40. 3 328 51 20. 9	68 16 40. 4 91 47 56. 3 148 51 45.7	Peace Creek Trout Punta Gorda Hotel cupola	5591. G 4626. 2 2214. 2	3. 747534 3. 665227 3. 345220
Cooper 1909 1909	26 55 33. 297 82 05 09. 535	1024. 8 263.1	217 08 23. 9 251 54 31.7	37 09 01.4 71 55 28.0	Live Oak Point 1909 Punta Gorda Hotel cupola	3782. 3 3607. 4	3. 577757 3. 557198
Grassy Point 1909 1909	20 57 13. 032 82 05 43. 755	401.1 1206. 9	270 57 47. 2 294 01 20.2	90 58 40. 2 114 02 32.0	Live Oak Point 1909 Punta Gorda Hotel cupola Cooper 1909	3228. 0 4787. 8	3. 508929 3.680136
			342 54 12. 7	162 54 28. 2	3211.5	3. 506702
Locust Point 1909 1909	26 55 49. 773 82 08 06.711	1531.9 185.1	236 58 30. 4 250 42 31.8 265 46 04. 8	56 59 35. 2 70 44 29. 6 85 48 21. 4	Grassv Point 1909 Live Oak Point 1909 Punta Gorda Hotel cupola Cooper 1909	4702. 9 7597. 2 8339.0	3. 672370 3.880054 3.921144
			275 54 41. 2	95 56 01.5	4914. 3	3. 691463
Supplementary points
Punta Rasa Hotel cupola 1909	20 29 11.718 82 00 47. 062	360.6 1303. 4	0 50 23. 3 124 14 58.7 104 17 45.0	180 50 22. 4 304 14 50. 2 284 10 34. 2	Point Ybel 2 Ovster South End	3611.3 637. 6 4537.7	3. 557666 2. 804558 3.656837

16

U. S. COAST AND GEODETIC SURVEY — SPECIAL PUBLICATION NO. 16. CALOOSAHATCHEE RIVER TO CHARLOTTE HARBOR— Continued

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Supplementary points- Continued Middle Point 1909 1909	26 28 08. 566 82 03 34. 211	263.6 947.6	o / // 184 19 29. 9 240 41 20. 3 247 13 00. 6	4 19 33.6 60 42 26. 3 67 14 15. 1	South End Oyster Punta Rasa Hotel cupola Point Ybel 2	Meters 3072.0 4704.4 5021.0	3.487424 3.672500 3. 700792
			290 00 18. 5	110 01 32. 1	4871. 6	3. 687670
Middle Point (U. 8. E.) 1909	26 28 09. 144 82 03 35. 128	281.4 973.0	241 01 41.4 247 30 54. 1 304 58 59. 4	61 02 47. 9 07 32 09.0 124 58 59. 8	Oyster Punta Rasa Hotel cupola Middle Point 1909	4717.9 5037.6 31.0	3.673747 3.702222 1.491502
Punta Rasa astronomic sta- tion 1874	26 29 13. 774 82 00 46. 062	423.9 1275. 7	23 38 15. 7 66 41 58. 3 118 02 59. 7	203 38 15. 3 246 40 43.4 298 02 50. 8	Punta Rasa Hotel cupola Middle Point 1909 Oyster	69.1 5071.2 628.6	1. 839257 3.705115 2.798355
Punta Rasa rear range light 1909	26 29 22. 393 82 01 24. 619	689.2 681.8	266 36 59. 6 287 31 32. 2 345 55 37.9 57 40 27. 2 103 16 07. 6	86 37 07. 9 107 31 49. 0 165 55 53.8 237 39 29. 5 283 15 13.6	Oyster Punta Rasa Hotel cupola Point Ybel 2 Middle Point 1909 South End	514.0 1090.8 4061.3 4248.0 3449.2	2. 710945 3.037742 3.608665 3. 628184 3. 537719
Punta Rasa front range light 1909	26 29 04. 876 82 01 06. 607	150.0 183.0	181 25 56.9 248 44 39. 6 351 49 27. 8 67 02 15. 8 109 02 31.2	1 25 57. 1 68 44 48. 3 171 49 35. 6 247 01 10. 0 289 01 29. 1	Oyster Punta Rasa Hotel cupola Point Ybel 2 Middle Point 1909 South End	569.6 580.8 3435.3 4440.4 4079.2	2. 755545 2. 764036 3.535963 3. 647425 3. 610570
Sanibel Island L. H. 1909	26 27 09.592 82 00 51.909	295.2 1438.1	111 59 33.5 138 51 16. 1 174 33 00.9 182 02 44.2	291 58 21.2 318 50 07.5 354 32 54.6 2 02 46.4	Middle Point 1909 South End Oyster Punta Rasa Hotel cupola Point Ybel 2	4848.5 6478.9 4136.0 3760.8	3.685609 3.811503 3.616579 3.575286
			208 52 23.4	28 52 24.7	168.5	2.226516
Punta Rasa, Schultz' house, flags tan* 1909	26 29 05.604 82 00 21.068	172.5 583.5	12 43 38.9 71 50 45.3 104 38 56.2	192 43 26.4 251 49 19.2 284 38 44.6	Point Ybel 2 Middle Point 1909 Punta Rasa Hotel cupola	3509.0 5630.3 744.1	3.545178 3.750530 2.871648
St. James City dock ware- house, east gable • 1909	26 29 30.66 82 04 33.19	943.6 919.2	275 18 14 304 00 59	95 19 55 124 02 39	Punta Rasa Hotel cupola Point Ybel 2	6289.7 7493.9	3.79863 3.87471
Harris' house • 1892	26 33 23.85 81 55 19.28	734.1 533.7	54 48 10 99 43 25	234 47 29 279 43 01	Red Fish Point Harney Point	3136.3 1499.9	3.496420 3.176061
Rylander's house ' 1892	26 37 11.73 81 53 16.19	361.1 447.8	60 46 38 166 05 32	240 45 59 346 05 19	Four Mile Point Hancock	2770.0 3245.2	3.442475 3.511248
Edison's house ■ 1892	26 38 02.76 81 52 51.03	85.0 1411.4	136 56 46 187 08 43	316 56 22 7 08 49	Hancock Sawmill	2161.8 3110.7	3.334821 3.492857
Edison's laboratory l 1892	26 38 04.56 81 52 49.24	140.3 1362.0	121 24 24 186 21 02	301 24 17 6 21 07	Edison Sawmill	471.1 3049.9	2.673134 3.484290
Fort Myers, Parker's house1 1892	26 38 35.26 81 52 16.39	1085.2 453.3	103 23 58 164 41 41	283 23 18 344 41 32	Hancock Sawmill	2502.0 2163.3	3.398288 3.335106
Fort Myers, Methodist Church tower ' 1892	26 38 45.25 81 51 59.46	1392.6 1644.6	95 21 32 149 42 31	275 20 45 329 42 14	Hancock Sawmill	2914.8 2060.1	3.464612 3.313899
Fort Myers, Caloosa hotel ' 1892	26 38 49.87 81 51 53.55	1534.8 1481.0	92 25 52 143 41 44	272 25 02 323 41 24	Hancock Sawmill	3068.3 2031.0	3.486891 3.307717
Experimental station house> 1892	26 39 16.85 81 51 08.16	518.7 225.7	108 10 02 173 07 04	288 09 22 353 06 59	Sawmill Marsh Point	2586.6 2425.2	3.412727 3.384742
West Jetty 1892	26 41 13.40 81 50 13.53	412.4 374.0	20 23 53 56 47 50 240 02 18	200 23 36 236 47 21 60 02 36	Experimental Marsh Point Caloosa	2936.7 2152. 7 1199.5	3.467859 3.332979 3.078994
East Jetty 1892	26 41 20.40 81 50 03.49	627.8 96.5	23 40 20 56 09 00 243 16 25	203 39 59 236 08 26 63 16 37	Experimental Marsh Point Caloosa	3240.7 2503.1 852.8	3.510640 3.398475 2.930825
Roc-he's windmill, Useppa Island 1909	26 39 38.250 82 12 45.638	1177.2 1262.1	142 23 34.3 194 17 11.7 270 16 26.4 356 52 38.0	322 22 16.0 14 17 14.4 90 18 02.9 175 52 47.8	Gasparilla Island rear range L. H. Useppa Inn Brown Mellie	7891.8 686.9 5948.5 8425.8	3.897178 2.836868 3.774409 3.925613
Roche's water tank, Useppa Island 1909	26 39 38.381 82 12 45.982	1181.2 1271.6	142 25 47.2 195 08 21.5 270 18 43.2 355 48 52.9	322 24 29. 1 15 08 24.4 90 20 19.9 175 49 02. 9	Gasparilla Island rear range L. H. Useppa Inn Brown Mellie	7882.9 685.4 5958.0 8430.5	3.896684 2.835945 3.775104 3.925854

1 No check on this position.

TRIANGULATION ALONG THE WEST COAST OF FLORIDA. CALOOSAIIATCHEE RIVER TO CHARLOTTE HARBOR— Continued

17

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Supplementary points — Continued Roche's house, north gable, Useppa Island 1909	26 39 46.324 82 12 40.615	1425.7 1123.1	184 11 43.8 272 43 46.5 356 54 43.5	4 11 44.2 92 45 20.8 176 54 51.1	Useppa Inn Brown Mellie	Meters 418.3 5S16.1 8665.1	2.621455 3.764635 3.937774
Lacosta Island, quarantine building flagstaff 1909	26 42 21.767 82 14 45.964	669.9 1270.6	129 16 46.8 177 40 53.8 192 38 18.9 271 58 28.3	309 16 22.6 357 40 49.5 12 38 48.8 92 00 23.9	Gasparilla Island rear range L. H. Pelayo Plow Jug Point	1925.1 6579.8 8361.1 7107.7	3.284457 3.818211 3.922264 3.851727
Lacosta Island, pilot's look- out 1909	26 42 30.819 82 15 03.846	948.5 106.3	133 21 06.0 182 04 23.2 196 25 41.2 273 56 21.0	313 20 49.8 2 04 26.9 16 26 19.1 93 58 24.6	Gasparilla Island rear range L. H. Pelayo Plow Jug Point	1369.6 6299.9 8215.4 7615.8	3.136587 3.799336 3.914629 3.881714
Gasparilla Island, old quar- antine building flagstaff 1909	26 43 10.056 82 15 36.144	309.5 999.0	30 30 57.1 192 12 04.2 205 25 23.7 280 55 06.5	210 30 55.6 12 12 22.5 25 26 16.2 100 57 24.6	Gasparilla Island rear range L. H. Pelayo Plow Jug Point	203.3 5300.3 7490.3 8647.1	2.308052 3.724304 3.874500 3.936871
Boca Grande, long railroad pier, end.1 1909	26 43 11.80 82 15 22.27	363.2 615.5	203 10 07 282 24 41	23 10 53 102 26 53	Plow Jug Point	7199.5 8301.2	3.85730 3.91914
Kennedy 1859	26 44 10.559 82 04 10.169	325.0 281.0	34 55 08.0 69 51 24.2 123 52 54.4	214 53 58.5 249 48 43.1 303 50 46.4	Darling Bocillas El Gabo	7471.0 10550.4 9461.0	3.873378 4.023268 3.975938
Key Point 1859	26 47 45.009 82 03 46.793	1385.2 1292.5	125 07 40.2 164 43 22.4 179 58 59.5	305 05 07.2 344 42 34.0 359 58 59. 5	Dana Punta Gorda Pelican	11447.6 11094.2 4601.7	4.058713 4.045098 3.662916
Alligator 1860	26 52 21.325 82 03 37. 166	656.3 1025.9	3 54 58.1 78 44 24.0 121 37 17.0	183 54 53.7 258 41 46.4 301 34 43.7	Pelican Dana Shoal Point	3911.6 9817.3 10975.3	3.592351 3.991994 4.040416
Mangrove Point 1859	26 55 24.268 82 08 30.899	746.9 852.5	282 31 25.7 304 54 36.5 11 22 38.4	102 32 38.6 124 55 57.0 191 22 13.5	Eureka Punta Gorda Dana	4552. 1 59%. 5 7702.3	3.658212 3.777895 3.886622
Koonty 1860	26 57 01.619 82 06 57.353	49.8 1582.0	260 04 12. 7 340 01 55. 5 38 42 49. 0	80 04 39. 0 160 02 33. 8 218 42 18.6	Grassy Point Punta Gorda Locust Point	1621.7 6839.9 2960.7	3.209969 3. 835047 3. 471397
Mangrove Point light 1909	26 53 58. 389 82 07 14. 755	1797.0 407.1	157 18 33. 2 202 43 57. 6 224 01 13.0 239 34 29. 4	337 18 09. 7 22 44 38. 8 44 02 47. 2 59 36 22. 4	Locust Point 1909 Grassy Point 1909 Live Oak Point 1909 Punta Gorda Hotel cupola	3715. 7 6495. 4 8256. 5 7982. 8	3. 570045 3. 812605 3.916796 3.902157
Peace Creek light 1909	26 55 52. 788 82 06 14. 890	1624. 7 410.8	88 17 01.5 199 10 26.3 239 24 35. 5 264 18 50. 2 288 23 54.9	268 16 10.8 19 10 40. 4 59 25 42.6 84 20 16. 1 108 24 24.5	Locust Point 1909 Grassy Point 1909 Live Oak Point 1909 Punta Gorda Hotel cupola Cooper 1909	3086. 3 2614. 8 4746. 9 5257. 9 1900.2	3. 489443 3.417434 3. 676413 3. 720813 3. 278810
Punta Gorda astronomic station 1909	26 56 09.436 82 03 09. 245	290.4 254.9	71 28 42.3 114 40 33.6 151 28 16.8 266 07 44. 3	251 27 47. 8 294 39 23. 6 331 27 59.8 86 07 46. 1	Cooper 1909 Grassy Point 1909 Live Oak Point 1909 Punta Gorda Hotel cupola	3500. 0 4690. 1 2165. 6 110.9	3. 544070 3.671180 3. 335588 2. 044965
Punta Gorda, Weather Bureau pole 1909	26 56 08.064 82 03 11.101	248.2 306. 3	71 52 27. 5 115 24 36.3 153 11 03.2 252 55 36. 1	251 51 33.9 295 23 27.2 333 10 47. 1 72 55 38. 8	Cooper 1909 Grassy Point 1909 Live Oak Point 1909 Punta Gorda Hotel cupola	3438. 2 4661.6 2179. 3 169.3	3.536325 3. 668532 3.338311 2. 228707
Punta Gorda, Presbyterian church spire 1909	26 56 00.642 82 03 14.777	19.7 407.7	75 07 14.4 118 28 24.2 157 55 03. 7 223 25 37. 8	255 06 22. 4 298 27 16. 7 337 54 49. 2 43 25 42. 1	Cooper 1909 Grassy Point 1909 Live Oak Point 1909 Punta Gorda Hotel cupola	3275. 9 4674. 6 2345. 4 383.0	3. 515336 3.669749 3.370212 2.583177
Punta Gorda, cattle dock, end ' 1909	26 56 06. 57 82 04 01.99	202.2 54.9	191 55 00 266 29 32	11 55 07 86 29 58	Live Oak Point 1909 Punta Gorda Hotel cupola	2034.9 1568.3	3.30854 3. 19543
Punta Gorda, City dock end i 1909	26 56 27. 10 82 03 34. 42	834.0 949.5	165 58 03 303 38 58	345 57 57 123 39 11	Live Oak Point 1909 Punta Gorda Hotel cupola	1400.9 967.5	3. 14639 2.98566
Punta Gorda, Phosphate Works, long building, flagstaff i 1909	26 55 52. 26 82 03 36. 72	1608. 4 1013.2	173 30 42 238 18 46	353 30 37 58 19 00	Live Oak Point 1909 Punta Gorda Hotel cupola	2447. 0 1020. 7	3.38863 3.00891
Charlotte Harbor, cattle dock, end ' 1909	26 57 00.86 82 03 33.08	26.5 912.5	334 00 18 130 19 13	154 00 31 310 19 07	Punta Gorda Hotel cupola Live Oak Point 1909	1752. 5 494.4	3. 24367 2.69406

97141°— 13-

No check on this position.

18

U. S. COAST AND GEODETIC SURVEY — SPECIAL PUBLICATION NO. 16. CALOOSAHATCHEE RIVER TO CHARLOTTE HARBOR— Continued

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Supplementary points — Continued Charlotte Harbor, church spire » 1909 Hotel Cleveland, north gable ' 1909	26 57 33. 65 82 04 16. 41 26 57 42. 79 81 59 43. 86	1035.6 452.6 1316. 9 1210.0	322 46 21 63 17 58 61 45 41 126 10 22	142 46 53 243 16 14 241 45 07 306 09 57	Punta Gorda Hotel cupola Locust Point 1909 Trout Peace Creek	Meters 3245.6 7111.8 2355.9 1864.0	3.51130 3.85198 3.37216 3.27044

GASPARILLA SOUND TO SARASOTA BAY

Principal points
Oasparilla 1859	26 48 19.909 82 16 36.469	612.7 1007.2	292 28 21.4 352 17 33.6	112 30 02. 0 172 17 55. 3	Oso Boca Grande	6670.2 9928.8	3.824137 3.996898
Flat 1860	26 49 37.613 82 14 13.348	1157. 6 368.5	335 54 27.6 58 49 56.4	155 55 03. 7 238 48 51.8	Oso Gasparilla	5414.0 4619.6	3.733520 3.664606
Trepador 1860	26 50 14. 185 82 16 25.080	436.6 692.4	287 11 10.3 5 06 38. 8	107 12 09.8 185 06 33.7	Flat Gasparilla	3807.6 3531.1	3.580648 3.547908
Boca Nueva 2 1879	26 50 37.354 82 18 03. 238	1149.6 89.4	284 44 05.9 330 27 59. 1	104 44 50. 2 150 28 38.3	Trepador Gasparilla	2802.4 4861.6	3.447530 3.686777
Hog 1879	26 51 42.727 82 18 06.757	1315.0 186.5	314 08 38. 8 357 14 08. 2	134 09 24. 7 177 14 09.8	Trepador Boca Nueva 2	3912. 2 2014.3	3.592426 3.304129
Bocilla 1879	26 52 16.080 82 19 34.543	494.9 953.5	292 57 08.0 320 19 00. 8	112 57 47.7 140 19 42. 1	Hog Boca Nueva 2	2631.7 3947.9	3.420233 3.596381
Lemon 1879	26 52 34.483 82 18 49. 279	1061.3 1360.2	323 36 44. 6 65 36 59. 1	143 37 03. 8 245 36 38. 6	Hog Bocilla	1978. 6 1371.8	3.296362 3. 137286
Buttonwood 1879	26 53 27.013 82 19 09.452	831.4 260.8	340 59 42. 8 17 36 04. 4	160 59 51.9 197 35 53. 1	Lemon Bocilla	1709.9 2290.3	3.232975 3.359897
Speedwell 1879	26 53 35. 835 82 20 27.661	1102.8 763.4	277 09 53. 8 329 08 54. 7	97 10 29. 2 149 09 18. 8	Buttonwood Bocilla	2175. 4 2859.1	3.337535 3.456231
Merchant 1879	26 54 46.924 82 20 06.920	1444.2 190.9	327 10 56.3 14 39 39. 4	147 11 22.3 194 39 30.0	Buttonwood Speedwell	2926.4 2261.5	3.466328 3.354401
Stump Pass 1879	26 55 24.458 82 21 40.393	752.8 1114.4	294 07 20.9 329 01 04.6	114 08 03. 2 149 01 37. 5	Merchant Speedwell	2825. 9 3899.2	3.451160 3.590980
Lopez 1879	26 56 41.497 82 21 13.929	1277.2 384.2	332 19 45. 9 17 06 58. 1	152 20 16. 2 197 06 46. 1	Merchant Stump Pass	3981.4 2480.9	3.600040 3.394608
Jacobs 1879	26 57 09. 117 82 22 42.970	280.6 1185.3	289 05 07. 7 331 48 29. 1	109 05 48. 0 151 48 57.4	Lopez Stump Pass	2599.0 3654.5	3.414814 3.562831
Porpoise ma	26 58 08.237 82 22 26.428	253.5 728.9	323 09 38. 4 14 04 39. 1	143 10 11.3 194 04 31.6	Lopez Jacobs	3335.5 1875.9	3.523161 3.273205
Rocky Point 1882	26 58 41.678 82 23 47. 567	1282.7 1311.8	294 41 45.3 327 58 30.4	114 42 22. 1 147 58 59. 7	Porpoise Jacobs	2463.0 3360.0	3.391463 8.526339
Horse and Chaise 1882	27 03 48.934 82 26 51. 194	1506.1 1410.7	331 49 45.4	151 51 08. 8	Rocky Point	10726.2	4.030444
Keg 1878	27 10 30.301 82 29 48. 772	932.6 1342.6	338 23 21.7	158 24 42.6	Horse and Chaise	13286. 2	4.123402
Northwest 1878	27 11 25.824 82 30 10. 755	794.8 296.0	340 29 57.8	160 30 07. 8	Keg	1812.9	3.258371
Huckleberry Camp 1878	27 10 51.655 82 29 23.532	1589.9 647.7	46 35 31. 8 128 58 41.1	226 35 20. 3 308 58 19. 5	Keg Northwest	956.4 1672.0	2.980640 3.223240
Webb 1878	27 12 12.495 82 29 58.576	384.6 1612. 1	338 48 28. 6 13 08 09. 9	158 48 44. 6 193 08 04.3	Huckleberry Camp Northwest	2668.5 1475.0	3.426273 3.168801
Quick 1878	27 13 05.962 82 31 05. 244	183.5 144.3	311 53 12.7 334 03 03.9	131 53 43. 2 154 03 28. 8	Webb Northwest	2464.6 3427.5	3. 391743 3.534983
Clower 1878	27 13 14.815 82 30 09.039	456.0 248.7	351 27 45. 7 80 00 42.9	171 27 50.5 260 00 17. 2	Webb Quick	1939.6 1570. 4	3.287714 3.196023
HuU 1878	27 15 07.236 82 31 04.970	222.7 136.7	336 01 12.3 0 06 56.7	156 01 37.9 180 06 56.6	Clower Quick	3786.9 3732. 7	3.578287 3.572018
Little Sarasota 1878	27 14 44.310 82 32 10. 760	1363.8 296.0	248 41 47. 1 329 13 16.0	68 42 17.2 149 13 46. 0	Hull Quick	1942.6 3523.1	3.288385 3.546927
Young 1878	27 16 44.036 82 32 23.503	1355.4 646.4	324 03 05. 3 354 33 56.3	144 03 41.3 174 34 02. 1	Hull 1 Little Sarasota	3680.1 3701.6	3.565855 3.568393

> No check on this position.

TRIANGULATION ALONG THE WEST COAST OF FLORIDA. GASPARTLLA SOUND TO SARASOTA BAY— Continued

19

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Principal points — Contd Sarasota 1878	27 16 53. 330 82 34 09. 169	1641.4 252.2	275 36 54. 1 320 38 03. 1	95 37 42. 5 140 38 57.3	Young Little Sarasota	Meters 2920.1 5135.9	3.465402 3.710617
Cedar Point 1878	27 20 04. 333 82 33 01.843	133.4 50.7	350 17 38. 0 17 28 58. 1	170 17 55.6 197 28 27. 2	Young Sarasota	6254.4 6163.4	3.796186 3. 789823
New Pass 1878	27 20 19. 707 82 35 05.352	606.6 147.1	277 55 36. 8 346 19 40. 8	97 56 33. 5 166 20 06. 6	Cedar Point Sarasota	3427. 9 6537.2	3. 535030 3. 815392
Stephens 1878	27 22 25. 788 82 33 47. 691	793.7 1310.5	343 51 19. 7 28 48 59. 0	163 51 40.8 208 48 23. 3	Cedar Point New Pass	4532. 5 4428. 9	3.656342 3.646296
Mangrove 1878	27 23 37. 658 82 37 38.958	1159. 1 1070. 2	289 10 44. 2 310 44 56.8 325 16 27. 7	109 12 30.6 130 47 04. 3 145 17 38.3	Stephens Cedar Point New Pass	6728. 6 10055. 3 7412. 2	3. 827922 4. 002397 3. 869948
Bowlegs 1878	27 24 47.571 82 34 54.076	1464.2 1485.4	337 18 49. 5 340 30 38. 6 2 09 11.3 64 36 00. 2	157 19 20. 0 160 31 30. 2 182 09 06. 1 244 34 44. 3	Stephens Cedar Point New Pass Mangrove	4729.8 9247. 3 8250.4 5014. 8	3. 674841 3.966014 3.916477 3. 700257
Shell 1878	27 25 29. 155 82 37 17. 739	897.4 487.3	287 57 40.3 9 38 28. 8	107 58 46. 4 189 38 19. 0	Bowlegs Mangrove	4148. 6 3481.0	3. 617898 3. 541699
Tom 1878	27 25 07.980 82 39 20. 601	245.6 565.9	259 03 40. 5 274 53 12.9 314 52 03.3	79 04 37. 1 94 55 15. 6 134 52 50. 1	Shell Bowlegs Mangrove	3437. 1 7348. 1 3940. 2	3. 536193 3.866174 3. 595523
Key 1878	27 26 19.636 82 38 39. 155	604.4 1075. 3	294 36 39. 7 304 47 19. 6 341 38 50. 3 27 18 09. 7	114 38 23.3 124 47 57. 1 161 39 18.0 207 17 50. 6	Bowlegs Shell Mangrove Tom	6800.6 2722. 9 5252. 6 2482. 0	3. 832549 3. 435038 3. 720378 3. 394801
Longboat 1878	27 26 39. 218 82 41 32.031	1207. 1 879.6	277 13 26. 8 307 52 23. 8	97 14 46.5 127 53 24. 4	Key Tom	4785.8 4573. 5	3. 679954 3.660248
Cut 1878	27 27 57. 047 82 40 47. 141	1755. 9 1294.3	310 27 34. 3 335 26 52. 7 27 13 54. 3	130 28 33.3 155 27 32. 6 207 13 33. 6	Key Tom Longboat	4619. 7 5720. 8 2694. 1	3.664613 3. 757459 3.430410
Anna Maria Key southeast base 1873	27 28 33.317 82 42 11.131	1025. 5 305.6	295 49 38. 6 342 59 56.3	115 50 17.3 163 00 14.3	Cut Longboat	2562. 0 3672. 4	3.408580 3.564945
Mound 1878	27 28 39.348 82 41 19. 778	1211.1 543.0	325 27 43.3 5 12 00.0 82 30 07. 3	145 27 58. 4 185 11 54.4 262 29 43. 6	Cut Longboat Anna Maria Key southeast base	1580.6 3712.8 1422.0	3. 198812 3. 569705 3. 152904
Coral I860	26 48 55. 363 82 15 08.440	1703. 9 233.1	65 50 01.5 122 47 56. 2 229 28 33. 5 314 17 55. 5	245 49 21.8 302 46 38. 0 49 28 58. 4 134 18 56. 5	Gasparilla Boca Nueva Flat Oso	2664.7 5693. 7 2001.4 5214. 4	3.425655 3. 755394 3. 301328 3. 717207
Boca Nueva I860	26 50 35. 546 82 18 01.787	1094.0 49.3	283 49 33. 7 330 33 19. 5	103 50 17.3 150 33 58. 0	Trepador Gasparilla	2749. 8 4793. 4	3. 439307 3.680644
Llano 1860	26 51 00. 773 82 17 34.064	23.8 940.4	306 58 07. 8 342 11 16. 1 44 35 35. 5	126 58 38.9 162 11 42.1 224 35 23.0	Trepador Gasparilla Boca Nueva	2384.0 5200.0 1090.2	3. 377301 3.716006 3.037522
Pelayo 1860	26 45 55.385 82 14 55.598	1704. 6 1536. 1	312 46 39.3 341 01 07.6 12 52 20. 7 176 20 11.6	132 48 39. 2 161 02 08. 8 192 52 00. 8 356 20 05. 8	Jug Point Useppa Inn Gasparilla Island rear range L. 11. Coral	10040. 6 11569.7 5493. 7 5550. 4	4. 001760 4.063322 3. 739863 3. 744326
Plow 1909	26 46 46.853 82 13 39. 741	1442.0 1097. 8	327 53 44. 3 352 25 31. 8 25 34 20. 0 52 55 17.3 148 13 48.0	147 55 10. 1 172 25 58. 8 205 33 25.9 232 54 43. 1 328 13 08. 0	Jug Point Useppa Inn Gasparilla Island rear range L. II. Pelayo Coral	9921.3 12635.3 7692. 8 2627. 0 4652.4	3. 996570 4. 101586 3.886085 3. 419453 3. 667677
Gasparilla 1909 1909	26 48 16. 040 82 16 43. 134	493.6 1191.3	245 09 42. 6 325 32 05. 3 349 45 57.9	65 10 25. 3 145 32 53. 8 169 46 26. 5	Coral Pelayo Gasparilla Island rear range L. H.	2881.7 5250. 1 9841. 0	3. 459643 3. 720167 3. 993040
Plaeida 19u9	26 49 48.641 82 15 49. 712	1497. 0 1372. 7	325 11 44.3 348 14 06.9 27 22 18. 3	145 12 02. 9 168 14 31.3 207 21 54. 2	Coral Pelavo Gasparilla 1909	1996.9 7332. 8 3209.1	3.300364 3. 865269 3. 506389
Section Post (concrete) quarter corner between Sees. 22 and 27, T. 42 S., R. 20 E.	26 49 06. 853 82 17 05.325	210.9 147.0	238 21 51. 6 2'70 15 43. 2 338 35 56. 7	58 22 25. 7 96 15 35. 9 158 36 06. 7	Plaeida Coral Gasparilla 1909	2452. 3 3247. 2 1679.7	3.389569 3.511510 3. 225219
Mound 2 1908	27 28 39. 399 82 41 19. 749	1212.7 542.2	135 09 13.7 184 51 26.9	315 08 31. 2 4 51 32. 2	Anna Maria Key northwest base. Perico 2	3585. 1 3685. 3	3. 5545045 3. 5664784

20

U. S. COAST AND GEODETIC SURVEY — SPECIAL PUBLICATION NO. 16. GASPARILLA SOUND TO SARASOTA BAY— Continued

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	distance	Loga- rithm
Principal points — Contd. Anna Maria Key southeast base 2 1908	27 28 33.321 82 42 11. 135	1025.6 305.7	157 43 27. 0 204 03 03.5 262 26 33. 3	337 43 08.2 24 03 32. 6 82 26 57. 0	Anna Maria Key northwest base Perico 2 Mound 2	Meters 2948.8 4226.2 1423.1	3.4696470 3. 6259524 3. 1532395
Cortez 1908	27 27 46. 226 82 41 02.091	1422.8 57.4	127 24 30. 2 163 30 01. 4	307 23 58. 4 343 29 53. 3	Anna Maria Key southeast base 2 Mound 2	2386.4 1707.0	3.3777412 3.2322212
Longboat 2 1908	27 26 44.361 82 41 31. 537	1365.4 866.0	162 02 23. 1 185 13 19. 8 203 00 21. 2	342 02 04. 9 5 13 25. 3 23 00 34. 8	Anna Maria Key southeast base 2 Mound 2 Cortez	3525.6 3555.6 2068.8	3. 5472331 3.5509130 3. 3157084
Bolees Creek 1908	27 24 38. 899 82 34 41.558	1197. 3 1141.6	96 40 44.9 115 25 43. 1	276 38 36. 4 295 23 53. 7	Tom Key	7717. 4 7225.3	3. 8874701 3.8588542
Long Bar Point 1908	27 25 31. 592 82 37 15. 981	972.4 439.0	78 01 25. 1 122 55 21.9 290 54 52. 4	258 00 27. 7 302 54 43. 6 110 56 03. 4	Tom Key Bolees Creek	3499.4 2721.3 4541.3	3.5439965 3. 4347818 3. 6571770
Whale Key 1908	27 23 35. 842 82 37 38. 986	1103.2 1071.1	248 16 39. 7 135 27 30. 8 161 51 09. 1 190 03 26. 6	68 18 01. 4 315 26 44. 0 341 50 41. 4 10 03 37. 2	Bolees Creek Tom Key Long Bar Point	5246.6 3979. 5 5305.6 3618. 3	3. 7198776 3.5998306 3. 7247320 3.5585058
Cedar Point 2 1908	27 20 02. 542 82 33 01.023	78.2 28.1	130 41 40. 1 162 00 46.9	310 39 32.3 342 00 00. 7	Whale Key Bolees Creek	10072. 5 8943.4	4.0031386 3.9515040
New Pass 2 1908	27 20 19. 531 82 35 05. 362	601.1 147.4	145 04 02. 5 184 40 58. 1 278 41 25. 1	325 02 51. 9 4 41 09. 0 98 42 22. 2	Whale Key Bolees Creek Cedar Point 2	7371. 1 8009.9 3457. 7	3.8675305 3.9036254 3. 5387884
Sarasota 2 1908	27 16 52.785 82 34 09. 550	1624.7 262.6	166 26 43. 0 197 52 33. 8 207 41 04.0	346 26 17. 4 17 53 05. 2 27 41 25. 0	New Pass 2 Cedar Point 2 Lone Pine	6545.8 6136. 9 2711.9	3.8159640 3.7879495 3. 4332782
Young 2 1908	27 16 44. 011 82 32 23. 562	1354.6 648.0	95 17 59. 0 148 13 52. 1 170 26 02. 1	275 17 10.4 328 13 24. 6 350 25 44. 9	Sarasota 2 Lone Pine Cedar Point 2	2927.5 3142.4 6196.8	3.4664941 3. 4972559 3. 7921651
Supplementary points
Boca Grande, City lookout l 1909	26 45 02. 26 82 15 39. 64	69.6 1095.4	301 06 54 331 50 23	121 09 14.0 151 51 44.0	Jug Point Useppa Inn	10030.2 10554.3	4.00131 4.02343
Gasparilla Island Concrete works water tank 1909	26 47 40. 629 82 16 20. 590	1250.4 568.7	150 15 35. 0 192 12 39. 2 220 54 01. 8	330 15 24. 8 12 12 53. 1 40 54 34.3	Gasparilla 1909 Placida Coral	1255.2 4031.0 3043.2	3. 098703 3*. 605413 3.483327
Charlotte Harbor & North- ern Ry.: West drawbridge, east end 1909	26 48 56. 191 82 16 15. 261	1729.4 421.4	270 47 18.2 31 55 19.8 203 36 23. 8	90 47 48.3 211 55 07. 2 23 36 35. 3	Coral Gasparilla 1909 Placfda	1845.5 1455.9 1761. 7	3.266122 3. 163123 3.245922
East drawbridge, east end 1909	26 49 32. 675 82 16 03. 471	1005.6 95.8	217 42 35. 0 307 04 25. 3 24 54 47. 2	37 42 41. 2 127 04 50. 1 204 54 29. 3	Placida Coral Gasparilla 1909	621.1 1904.8 2600.5	2. 793168 3.279848 3.415058
Long trestle, east end 1909	26 49 51. 867 82 15 57. 010	1596.3 1574. 2	296 13 49. 0 322 21 19. 6 23 21 42. 8	116 13 52. 3 142 21 41. 5 203 21 22. 0	Placida Coral Gasparilla 1909	224.6 2196.2 3212. 5	2.351487 3.341667 3.506847
Long trestle, west end 1909	26 48 11.396 82 16 29. 864	350.7 824.8	111 18 29.1 200 19 35. 8 238 57 31.0	291 18 23. 1 20 19 53. 9 58 58 07. 7	Gasparilla 1909 Placida Coral	393.4 3191.7 2624.5	2. 594816 3.504020 3.419044
Section Post (concrete) M. C. Sec. 27, T. 42 S.( R.20E. 1909	26 48 26. 298 82 16 36. 312	809.4 1002.9	30 49 45. 7 206 55 05.6 249 45 39. 4	210 49 42. 5 26 55 26. 6 69 46 19.0	Gasparilla 1909 Placida Coral	367.6 2842.3 2586.4	2.565414 3.453665 3. 412697
Section Post (concrete) M. C. Sees. 22 and 27, T. 42S.,R.20E.> 1909	26 49 06. 86 82 16 58. 20	211.1 1007. 2	89 57 33 235 46 51	269 57 30 55 47 22	Section Post (con- crete) quarter corner between Sees. 22 and 27, T.42S., R.20E. Placida	196.8 2286.9	2.29411 3.35925
Lone Pine 1908	27 18 10. 807 82 33 23. 728	332.6 052.5	144 48 48. 0 190 17 12.0	324 48 01. 3 10 17 22. 4	New Pass 2 Cedar Point 2	4848.2 3495.3	3.6855793 3.5434832
Fishing Point pavilion, north gable 1908	27 IS 15.340 82 33 26. 246	472.2 721.7	191 52 03. 2 328 28 38. 9 25 06 48. 4	11 52 14.7 148 29 07. 6 205 06 28.5	Cedar Point 2 Young 2 Sarasota 2	3371.6 3297.5 2806.2	3. 527840 3. 518182 3.448113
Sarasota Baptist Church spire1 1908	27 20 15. 76 82 32 32. GO	485.1 896.2	23 06 48 62 30 06	203 06 04 242 29 53	Sarasota 2 Cedar Point 2	6792.1 880.7	3.832003 2.944836
Bell Haven Hotel cupola 1908	27 20 04. 866 82 32 38.055	149.8 1040.1	23 03 24.2 83 32 14. 1 96 22 12.0	203 02 42. 2 263 32 03.6 276 21 04. 4	Sarasota 2 Cedar Point 2 New Pass 2	6425.0 635.4 4074.3	3. 807874 2.803036 3.610057

> No check on this position.

TEIANGULATION ALONG THE WEST COAST OF FLORIDA. GASPARILLA SOUND TO SARASOTA BAY-Continued

21

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Supplementary points — Con Sarasota Methodist Church spire 1908	27 20 09. 801 82 32 32. 940	301.7 905.5	23 39 44. 4 73 51 34. 4 94 05 53. 2	203 39 00. 1 253 51 21.5 274 04 43. 2	Sarasota 2 Cedar Point 2 New Pass 2	Meters 6620. 2 803.6 4200.5	3. 820872 2.905065 3. 623305
Warehouse on piles, west gable 1908	27 22 20. 068 82 33 52. 209	617.7 1434. 7	341 36 44. 1 28 27 32. 0 162 23 55. 6	161 37 07. 6 208 26 58. 4 342 23 32. 9	Cedar Point 2 New Pass 2 Bolees Creek	4460.6 4219.8 4483.0	3. 649393 3.625290 3. 651572
Southend of cut 1908	27 25 19. 240 82 38 15.571	592.2 427.7	79 01 43. 4 160 47 25.4 256 55 09. 6	259 01 13.4 340 47 14.5 76 55 37. 0	Tom Key Long Bar Point	1819. 7 1968. 7 1680.4	3.259992 3. 294175 3.225400
North end of cut 1908	27 26 03. 929 82 38 40. 331	120.9 1107.7	32 43 12. 8 183 48 55. 6 293 14 37. 4	212 42 54.2 3 48 56. 1 113 15 16.2	Tom Key Long Bar Point	2046. 7 484.6 2521.5	3. 311044 2. 685405 3. 401656
Robert's house chimney 1908	27 26 34. 432 82 41 19.257	1059. 8 528.9	132 10 56. 0 192 02 25. 6 275 54 08. 2	312 10 50. 3 12 02 33. 5 95 55 22. 0	Longboat 2 Cortoz Key	455.1 2259. 5 4420.3	2. 658112 3. 354012 3. 645456
Fulford's, Win., house, south chimney • 1908	27 27 58.97 82 41 06. 26	1815. 1 171.9	343 45 01 16 49 12	163 45 03 196 49 01	Cortoz Longboat 2	408.7 2399.2	2. 611442 3.380069
Bratton's, Mrs., house, south chimney l 1908	27 27 58. 17 82 41 12.66	1790.4 347.6	321 43 13 12 51 19	141 43 18 192 51 11	Cortoz Longboat 2	468.4 2330.2	2. 670572 3. 367401
Brunsman's, A. G., house, chimney 1908	27 28 24. 493 82 42 08. 632	753.9 237.0	158 25 26. 9 165 48 16.7 251 07 20. 8 341 42 35. 1	338 25 06. 9 345 48 15. 5 71 07 43. 3 161 42 52. 1	Anna Maria Key northwest base Anna Maria Key southeast base 2 Mound 2 Longboat 2	3226. 6 280.3 1418.3 3246. 0	3. 508739 2. 447608 3. 151770 3.511346

TAMPA BAY.

Principal points
Anna Maria Key north- west base 1873	27 30 01.973 82 42 51.859	60.7 1423. 4	315 10 06.8 337 43 03. 4 340 38 38. 7	135 10 49.3 157 43 22. 2 160 39 15. 6	Mound Anna Maria Key southeast base Longboat	3585.7 2948. 96 6614. 4	3.554570 3. 469669 3. 820489
Nell 1878	27 29 42. 030 82 41 17. 653	1293. 7 484.6	1 43 55. 4 34 46 09. 5 103 21 35.5	181 43 54. 4 214 45 44. 8 283 20 52.0	Mound Anna Maria Key southeast base Anna Maria Key northwest base	1930. 2 2574.6 2657.7	3. 285(504 3. 410702 3. 424507
Perico 1873	27 30 35. 254 82 41 10.213	1085. 1 280.3	24 01 07. 5 69 50 39. 0	204 00 39. 4 249 49 52. 1	Anna Maria Key southeast base Anna Maria Key northwest base	4108. 9 2972. 0	3.613721 3. 473049
Palm 1873	27 32 13. 227 82 44 35. 603	407.1 976.9	298 08 03. 8 324 49 10. 5 329 37 41.0	118 09 38. 7 144 49 58.4 149 38 47. 8	Perico Anna Maria Key northwest base Anna Maria Key southeast base	6392. 4 4942.4 7844.7	3.805665 3. 693939 3. 894578
Terraceia 1873	27 33 31.971 82 37 36.579	984.0 1003.5	47 09 21.3 78 07 18. 8	227 07 42. 5 258 04 05.0	Perico Palm	7996.9 11749.2	3. 902921 4.070009
Egmont Key L. H. 1873	27 36 01.980 82 45 39. 003	60.9 1069. 6	289 12 18. 1 323 43 53. 3 346 07 17. 5 337 30 27. 7	109 16 01.4 143 45 57. 6 166 07 46. 8 157 31 44.9	Terraceia Perico Palm Anna Maria Key northwest base	14014. 6 12470.5 7252. 6 11992.4	4. 146581 4.095884 3.860495 4.0789052
Pinelos 1873	27 42 15.719 82 38 29. 340	483.8 803.8	354 52 09. 8 45 42 01.7	174 52 34. 2 225 38 42. 3	Terraceia Egmont Key L. H.	16185. 9 16463. 3	4. 209136 4. 216518
Roach 1873	27 39 55. 982 82 32 30.962	1723. 1 848.6	35 21 20.8 71 36 46. 5 113 40 32.8	215 18 59.2 251 30 41. 1 293 37 46. 4	Terraceia Egmont Key L. H. Pinelos	14489. 2 22773. 4 10721. 0	4. 161045 4. 357427 4. 030236
Terraceia 2 1908	27 33 35. 853 82 37 33. 681	1103.5 924.0	53 00 15. 4 108 42 01.8	232 57 48.3 288 38 17. 1	Anna Maria Key northwest base Egmont Key L. H.	10934.8 14050.9	4.0388117 4. 1477056
Palm 2 1908	27 32 12.094 82 44 26.246	372.2 720.2	164 15 11.4 257 08 33. 2 327 06 02. 8	344 14 37. 7 77 11 44.0 147 06 46.5	Egmont Key L. H. Terraceia 2 Anna Maria Key northwest base	7352. 0 11609.2 4769. 8	3.8664040 4. 0648014 3. 6784970
Perico 2 1908	27 30 38. 702 82 41 08. 379	1191.2 230.0	68 18 08.6 117 54 33.0 143 17 21.6 227 11 59.9	248 17 20.8 297 53 01.6 323 15 16.4 47 13 39. 2	Anna Maria Key northwest base Palm 2 Egmont Key L. H. Terraceia 2	3056.9 6143. 9 12415. 1 8027.4	3.4852866 3.7884463 4. 0939500 3. 9045727

1 No check on this position.

22

U. S. COAST AND GEODETIC SURVEY SPECIAL PUBLICATION NO. 16.

TAMPA BAY-Contlnucd

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	loga- rithm
Principal point*— Contd			O / //	. , „		Meters
Mullet Key Shoal light 1908	27 37 43. 932 82 40 46. 887	1352. 2 1285.5	325 13 49. 2 30 30 51.3 68 37 27.3	145 15 18.7 210 29 09. 8 248 35 11.9	Terraceia 2 Palm 2 Egmont Key L. H.	9294.2 11854.3 8602.6	3.9682133 4.0738768 3.9346290
Pinelos2 1908	27 42 15. 797 82 38 30. 260	486.2 829.1	354 27 37. 6 24 06 57.7 45 37 59. 1	174 28 03. 8 204 05 54.2 225 36 40. 1	Terraceia 2 Mullet Key Shoal light Egmont Key L. H.	16079.0 9167. 7 16447. 0	4.2062599 3.9622614 4. 2160870
Cockroach (U. S. E.) 1908	27 40 31.551 82 32 07. 566	971.1 207.3	34 58 05.3 69 35 46. 8 70 06 38.0 107 02 19.0	214 55 34. 1 249 29 30. 3 250 02 36.9 286 59 21. 2	Terraceia 2 Egmont Key L. H. Mullet Key Shoal light Pinelos 2	15610. 1 23741.9 15141.0 10966.2	4.1934053 4.3755155 4. 1801545 4.0400554
Ant 2 1908	27 43 33.293 82 37 43. 110	1024. 8 1180.9	301 17 55. 0 28 26 17.7	121 20 31.0 208 25 55.8	Cockroach (U. S. E.) Pinelos 2	10761.6 2712.6	4.0318772 3.4333911
Indian Hill 2 1908	27 41 05.026 82 31 19.542	154.7 535.5	51 56 38.6 100 29 09. 0 113 29 57.0	231 56 16.3 280 25 49. 0 293 26 58.8	Cockroach (U. S. E.) Pinelos 2 Ant 2	1671. 4 12001.0 11456.9	3.2230816 4.0792174 4.0590672
Mangrove (U. S. E.) 1908	27 44 39. 712 82 28 48.389	1222.4 1325.3	32 04 54. 7 35 33 11.8 74 30 20.4 82 05 16. 5	212 03 44.4 215 31 39.3 254 25 49. 8 262 01 07. 7	Indian Hill 2 Cockroach (U. S. E.) Pinelos 2 Ant 2	7798.4 9387.4 16543.0 14787. 9	3.8920033 3.9725439 4. 2186145 4.1699064
Cedar Point (U. S. E.) 1908	27 50 08. 297 82 35 24. 177	255.4 661.6	313 00 12. 1 338 09 11.3 343 06 55.8 17 22 51.6	133 03 16. 6 158 11 05. 1 163 08 27.3 197 21 46. 9	Mangrove (U. S. E.) Indian Hill 2 Cockroach (U. S. E.) Ant 2	14822.2 18014. 2 18551.2 12739.7	4.1709112 4.2556158 4.2683726 4. 1051597
Gadsden 2 1908	27 49 17.482 82 28 26. 669	538.1 729.9	3 58 47.3 17 21 20. 3 55 13 18.7	183 58 37. 2 197 19 59. 8 235 08 59.4	Mangrove (U. S. E.) Indian Hill 2 Ant 2	8570.7 15880.3 18557.0	3.9330160 4.2008588 4.2685069
Gadsden Point light 1908	27 48 57.372 82 27 15. 815	1766.0 432.8	17 43 42. 4 59 53 35. 7 99 18 31.7 107 42 29.4	197 42 59. 2 239 48 43.5 279 14 43.8 287 41 56.3	Mangrove (U. S. E.) Ant 2 Cedar Point (U.S.E.) Gadsden 2	8326.2 19862. 5 13542 2 2035.6	3.9204452 4.2980344 4. 1316886 3.3086920
Alafla 2 1908	27 50 03.619 82 23 30.363	111.4 830.9	41 08 57. 2 71 43 33.6 80 05 07. 4	221 06 28.9 251 41 48.4 260 02 49. 1	Mangrove (U. S. E.) Gadsden Point light Gadsden 2	13236.5 6498.2 8232.3	4. 1217733 3.8127950 3.9155206
Ball 1908	27 54 19. 176 82 24 54. 610	590.3 1493.5	343 39 54. 7 21 18 53. 0 32 00 26. 4	163 40 34. 1 201 17 47. 0 211 58 47.4	Alafla 2 Gadsden Point light Gadsden 2	8197.0 10632.2 10949.7	3. 9136571 4.0266232 4.0394029
Catfish Point (U. S. E.) 1908	27 50 42. 201 82 28 13.623	1299.0 372.8	219 10 14.8 278 41 33. 2 333 52 44.3	39 11 47.8 98 43 45. 5 153 53 11.3	Ball Alafla 2 Gadsden Point light	8616.4 7841.5 3593.7	3.9353269 3. 8943966 3.5555402
Ballast Point 2 1908	27 53 20.634 82 28 50.386	635.1 1378. 2	254 22 16. 2 304 41 16.6 342 17 07. 1 348 20 42. 8	74 24 06.5 124 43 46.2 162 17 51.4 168 21 00. 0	Ball Alafla 2 Gadsden Point light Catfish Point (U.S.E.)	6695.3 10650.4 8506.6 4979.4	3. 8257714 4.0273640 3.9297563 3.6971765
Picnic Island 1908	27 51 02.893 82 32 49.785	89.0 1362.1	330 43 27. 9 30 08 36.6 68 19 02.8	150 45 20.6 210 06 19. 9 248 17 50. 7	Mangrove (U. S. E.) Ant 2 Cedar Point (U. S. E.)	13519.6 16000.2 4546.6	4.130965 4.204125 3.657682
Dave 1908	27 53 46. 439 82 31 50.822	1429.4 1390.0	17 46 08.5 41 00 45. 0	197 45 40.9 220 59 05.3	Picnic Island Cedar Point (U.S.E.)	5286.3 8896.9	3. 723149 3.949239
Pete 1908	27 52 51.662 82 37 01.585	1590.2 43.4	258 45 34.4 295 54 18. 8 332 04 17.8	78 47 59. 7 115 56 16.4 152 05 03. 3	Dave Picnic Island Cedar Point (U. S. E.)	8665.4 7659.1 5691.1	3.937789 3. 884175 3. 755198
Gun 1908	27 54 51.146 82 31 50. 213	1574.3 1373.0	33 55 29.6 66 39 40. 0	213 53 49.6 246 37 14.3	Cedar Point (U. 8. E.) Pete	10490.9 9276.0	4.020814 3.967362
Dog 1908	27 54 22.308 82 38 26.354	686.7 720.7	265 17 23. 8 275 48 08. 5 320 16 15.3	85 20 29.3 95 51 13. 6 140 16 55. 0	Gun Dave Pete	10869.1 3627.8	4. 036195 4.036360 3.559638
Kocky Point 1906 Supplementary point »	27 57 47. 3*52 82 34 19. 216	1457.9 525.2	323 05 03. 2 331 18 27.2 7 10 12.9 26 00 43. 2 46 57 56. 7	143 06 13. 0 151 19 3a 6 187 09 42. 4 205 59 27. 2 226 56 00.8	Gun Dave Cedar Point (U.S.E.) Pete Dog	6783.5 8453.2 14242.0 10127. 1 9246.2	3.831455 3.927023 4. 153570 4.005487 3.965964
Johnson's house north ga- ble, Perico Island ' 1908	27 29 49. 53 82 41 14.91	1524. 5 409.3	33 21 03 98 12 02	213 20 37 278 11 17	Anna Maria Key southeast base 2 Anna Maria Key northwest base	2808 2689	3.44837 3.42952
Stake, south end of 40-foot cut 1908	27 30 46. 470 82 41 30. 678	1430.3 842.0	58 25 37. 7 291 20 19. 1 355 36 48. 4	238 25 00.2 111 20 29.4 175 36 53. 3	Anna Maria Key northwest base Perico 2 Mound 2	2615.4 657.1 3922.7	3.417545 2. 817596

No check on this position.

TRIANGULATION ALONG THE WEST COAST OF FLORIDA. TAMPA BAY— Continued

23

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Supplementary points — Continued Manatee 2 1908	27 31 54. 593 82 38 47. 547	1680.4 1304.7	93 20 20. 2 124 01 52. 7 163 04 36. 2	273 17 43. 6 303 58 42. 2 343 03 40. 9	Palm 2 Egmont Key L. H. Mullet Key Shoal light	Meters 9309.4 13615. 4 11239.9	3.968924 4. 134030 4. 050762
Snead Point Shoal light 1908	27 32 08. 838 82 40 02.882	272.0 79.1	32 56 30. 1 49 54 43. 1 90 48 41. 1 127 54 54. 3 236 47 40. 8 281 58 15. 1	212 55 59. 6 229 53 24. 8 270 46 39. 1 307 52 18. 6 56 48 49. 6 101 58 49. 7	Perico 2 Anna Maria Key northwest base Palm 2 Egmont Key L. H. Terraceia 2 Manatee 2	3305. 7 6062.5 7227.2 11683.7 4891. 9 2113. 2	3. 519267 3. 782649 3. 858972 4. 067582 3. 689476 3.324932
Manatee River Cut light 1908	27 31 46. 913 82 39 07.080	1444. 0 194.3	62 22 42.3 95 04 40. 9 126 09 48. 1 217 22 55. 2 246 11 52. 3	242 20 58. 4 275 02 13. 3 306 06 46. 8 37 23 38. 3 66 12 01. 4	Anna Maria Key northwest base Palm 2 Egmont Key L. H. Terraceia 2 Manatee 2	6963.4 8792. 2 13312. 7 4220. 3 585.8	3. 842824 3.944098 4. 124267 3. 625342 2. 767747
Terraceia Point No. 1 light 1908	27 32 44. 315 82 38 39. 683	1364.0 1088.8	54 11 05. 5 84 04 04. 6 117 54 14.8 228 46 34. 3	234 09 09. 1 264 01 24. 4 297 51 00. 7 48 47 04. 9	Anna Maria Key northwest base Palm 2 Egmont Key L. H. Terraceia 2	8535. 8 9560.6 13012. 0 2407. 4	3. 931245 3. 980436 4. 114345 3. 381547
Palmetto Schoolhouse dome 1908	27 31 03. 302 82 34 31. 994	101.6 878.0	97 26 10. 5 116 43 05. 2 133 17 50. 4	277 21 35. 9 296 37 56. 6 313 16 26. 4	Palm 2 Egmont Key L. H. Terraceia 2	16444. 1 20478. 1 6848.4	4.216011 4. 311289 3. 835589
Palmetto Church, tall thin spire 1908	27 30 52! 130 82 34 37. 228	1604.6 1021. 7	98 41 44. 7 117 45 21.8 141 38 39. 2 136 09 26. 6	278 37 12. 5 297 40 15. 6 321 34 24. 2 316 08 05. 0	Palm 2 Egmont Key L. H. Tomlinson Terraceia 2	16350. 1 20507. 8 24307. 2 6988.4	4. 213521 4.311918 4. 385735 3.844377
Fogarty ville Episcopal Church spire 1908	27 29 49. 390 82 35 14. 523	1520. 2 398.6	123 24 18. 2 123 50 12. 0 146 10 56. 2	303 22 39. 8 303 45 23. 2 326 06 58. 5	Manatee 2 Egmont Key L. H. Tomlinson	7002.3 20617. 3 25265. 6	3.845238 4. 314232 4. 402529
Braidentown electric power house stack 1908	27 29 50. 396 82 34 20. 968	1551. 2 575.6	117 36 15.4 121 37 39. 2 142 42 11.3 163 25 25. 7	297 34 12. 2 301 32 25. 6 322 40 42. 2 343 23 30. 2	Manatee 2 Egmont Key L. H. Terraceia 2 Pinelos 2	8254. 7 21837. 4 8724. 9 23940. 4	3. 916702 4. 339201 3. 940758 4. 379132
Braidentown standpipe 1908	27 29 31. 339 82 34 20. 451	964.6 561.4	121 02 38. 1 122 53 58. 9 144 50 43. 6 163 46 59. 9	301 00 34. 7 302 48 45. 1 324 49 14. 3 343 45 04. 2	Manatee 2 Egmont Key L. H. Terraceia 2 Pinelos 2	8554. 5 22162. 6 9206. 5 24507. 2	3. 932194 4. 345620 3.964094 4. 389293
Southwest Channel light 1908	27 34 48.271 82 44 44. 291	1485.8 1214. 8	146 31 24. 9 280 39 31.8 298 37 15. 5 322 20 50. 7 354 07 09. 1	326 30 59. 5 100 42 51. 0 118 40 00. 5 142 22 30. 4 174 07 17. 4	Egmont Key L. H. Terraceia 2 Manatee 2 Perico 2 Palm 2	2720. 1 12020. 5 11151.9 9700.7 4832. 6	3. 434582 4. 079924 4. 047348 3. 986802 3. 684177
Battery Page 1908	27 34 50. 066 82 45 52. 267	1541. 0 1433. 5	189 19 53. 9 279 26 59. 8 314 47 22. 7 334 06 20. 6	9 20 00. 0 99 30 50. 6 134 49 34. 0 154 07 00. 4	Egmont Key L. II. Terraceia 2 Perico 2 Palm 2	2243. 2 13866. 1 10978. 6 5404. 8	3.350870 4. 141954 4. 040547 3. 732778
Egmont Key, pilots' look- out 1908	27 35 10. 280 82 45 41. 605	316.4 1141.1	339 20 31 182 34 04 282 13 14 318 05 50	159 21 06 2 34 05 102 17 01 138 07 57	Palm 2 Egmont Key L. H. Terraceia 2 Perico 2	5861.2 1592. 9 13695. 8 11228. 1	3. 767990 3. 202186 4. 136588 4. 050307
Fort Dade, top of water tank 1908	27 35 41.545 82 45 45.875	1278. 7 1258. 1	196 40 45. 1 285 57 32. 1 320 44 33.0 335 26 17. 7 341 16 37. 7	16 40 48.3 106 01 20.0 140 46 41.3 155 27 38. 2 161 17 14.6	Egmont Key L. H. Terraceia 2 Perico 2 Anna Maria Key, northwest base Palm 2	656.6 14043. 8 12035. 4 11490.8 6806.9	2. 817315 4. 147486 4. 080460 4.060351 3.832950
Fort Dade, power house black stack 1908	27 35 41.442 82 45 45.091	1275. 6 1236.6	194 47 41. 2 285 58 14.3 320 48 44.3 341 26 24. 8	14 47 44.0 106 02 01.8 140 50 52. 2 161 27 01.3	Egmont Key L. H. Terraceia 2 Perico 2 Palm 2	653.9 14022. 3 12019. 3 6797. 0	2. 815478 4. 146820 4. 079880 3.832318
Fort Dade flagstafE 1908	27 35 41.249 82 45 36. 746	1269. 6 1007.8	174 27 36. 7 286 12 34.2 301 50 03. 1 343 16 29. 5	354 27 35. 6 106 16 17.8 121 53 12.5 163 17 02. 1	Egmont Key L. II. Terraceia 2 Manatee 2 Palm 2	641.1 13800.8 13216.6 6722.0	2.806932 4. 139903 4.121121 3. 827498
Army pier, tower coal shed ' 1908	27 35 55.02 82 45 33. 40	1693. 5 916.0	144 20.06 288 00 08	324 20 03 108 03 50	Egmont Key L. H. Terraceia 2	264 13838	2. 42081 4. 14106
Egmont Key landing, tower on pavilion 1908	27 35 55.045 82 45 33.430	1694. 3 916.8	303 35 11. 8 323 13 50.2 337 47 56. 9 344 57 47. 8	123 38 19.5 143 15 52. 8 157 49 11.6 164 58 18.9	Manatee 2 Perico 2 Anna Maria Key, northwest base Palm 2	13369. 6 12152. 6 11736.9 7105. 6	4. 126120 4. 0846'0 4.069552 3.851600

1 No check on this position.

24

U. S. COAST AND GEODETIC SURVEY — SPECIAL PUBLICATION NO. 16.

TAMPA BAY— Continued

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Supplementary points—
Continued
	at II		O 1 II	O t It		Meters
North Channel light	27 36 42.550	1309.7	297 24 32. 5	117 27 39.4.	Terraceia2	12472.3	4.095948
1908	82 44 17.284	474.0	335 09 22. 6	155 10 50. 0	Perico 2	12340.1	4.091320
			349 13 56.5	169 14 36.0	Anna Maria Key, northwest base	12550.5	4.098660
			60 52 35.0	240 51 57.3	Egmont Key L. H.	2565.3	3.409146
Fort deSota flagstaff	27 36 41.390	1274.0	4 08 45. 6	184 08 35. 5	Palm 2	8310.7	3.919636
1908	82 44 04.349	119.2	64 57 25. 9	244 56 42. 0	Egmont Key L. H.	2865.1	3. 457136
			298 01 54.0	118 04 54.9	Terraceia 2	12141.7	4.084281
			336 36 13. 4	156 37 34.8	Perico 2	12162. 6	4.085025
Fort de Sota, water tank	27 36 50.618	1558.0	3 31 41.6	183 31 32. 7	Palm 2	8589.3	3.933956
1908	82 44 06.982	191.4	59 19 31. 7	239 18 49. 1	Egmont Key L. H.	2934.0	3.467467
			299 02 16. 4	119 05 18. 5	Terraceia 2	12340.9	4.091346
			336 49 02. 6	156 50 25. 2	Perico 2	12452.0	4.095240
Fort de Sota power house	27 36 50.308	1548.5	3 18 55. 3	183 18 46. 9	Palm 2	8577.8	3.933375
black stack	82 44 08. 167	223.9	59 09 36. 5	239 08 54. 4	Egmont Key L. H.	2901.2	3.462583
1908			222 43 46. 5	42 46 23. 3	Pmelos 2	13643. 8	4. 134935
			298 55 33. 4	118 58 36.0	Terraceia 2	12364.7	4.092183
Quarantine building, tower	27 36 53.838	1657.1	9 54 56	189 54 30	Palm 2	8803.5	3.944653
on end of wharf	82 43 31.000	850.0	65 33 16	245 32 16	Egmont Key L. H.	3855.9	3.586128
1908			301 51 06	121 53 52	Terraceia 2	11540.3	4.062217
			341 16 20	161 17 26	Perico 2	12191.5	4.086058
Quarantine station, high	27 37 01.974	60.8	9 04 55.8	189 04 31. 7	Palm 2	9035.7	3.955962
water tank	82 43 34. 266	939.5	61 38 40. 5	241 37 42. 7	Egmont Key L. H.	3887.1	3.589624
1908			220 45 40. 0	40 48 01.1	Pmelos 2	12756. 8	4. 105742
			302 39 29. 0	122 42 15. 9	Terraceia 2	11749. 7	4.070025
Quarantine station, low	27 37 02. 723	83.8	9 18 08.3	189 17 43.6	Palm 2	9064.7	3.957353
water tank	82 43 32.846	900.6	61 37 05. 2	241 36 06. 7	Egmont Key L. H.	3932.3	3.594647
1908			220 41 46. 9	40 44 07. 4	Pmelos 2	12713. 9	4. 104279
			302 51 20. 7	122 54 07.0	Terraceia 2	11729.4	4.069276
Hospital (Mullet Key) west gable1 1908	27 37 10. 54	324.4	344 27 02	164 27 58	Perico 2	12519	4.09756
82 43 10. 65	292.0	12 43 28	192 42 53	Palm 2	9417	3.97393
Burslem (U. S. E.)	27 35 45.345	1395.7	35 08 13. 2	215 07 25.9	Terraceia 2	4873.5	3.687840
1908	82 35 51. 439	1410.6	160 05 53. 1	340 04 39. 4	Pinelos 2	12782.5	4. 106615
			214 50 58. 4	34 52 42. 2	Cockroach (U. S. E.)	10738. 2	4.030933
			217 07 33. 6	37 09 39. 6	Indian Hill 2	12344.3	4.091465
Point Pinelos light	27 41 47. 598	1465.1	6 43 11.9	186 42 41.6	Terraceia 2	15240. 7	4.183004
1908	82 36 28. 673	785.6	54 50 37.6	234 46 22. 1	Egmont Key L. H.	18459. 2	4. 266212
			104 36 42. 6	284 35 46. 1	Pinelos 2	3442.5	3.536877
			147 55 28. 3	327 54 53. 7	Ant 2	3839.7	3.584292
			278 46 26.6	98 48 50. 1	Indian Hill 2	8571.2	3.933043
			288 05 56. 4	108 07 57. 7	Cockroach (U. 8. E.)	7528.0	3.876682
St. Petersburg Club House	27 41 57. 195	1760.5	201 18 17.2	21 18 21.0	Pinelos 2	614.6	2.788580
flagstaff	82 38 38.411	1052.4	252 45 51.5	72 50 25. 9	Mangrove (U. S. E.)	16919.0	4.228374
1908			283 48 10. 7	103 51 12. 3	Cockroach (U. S. E.)	11029.5	4.042555
			353 26 08. 1	173 26 38. 2	Terraceia 2	15533.2	4. 191260
Tampa Bay beacon No. 4	27 43 15.064	463.7	296 39 50. 3	116 42 05.4	Indian Hill 2	8913.6	3.950053
1908	82 36 10. 234	280.4	307 06 32. 8	127 08 25.6	Cockroach (U. S. E.)	8339.0	3.921114
			64 34 29.8	244 33 24.9	Pinelos 2	4247.7	3. 628158
Indian Hill light	27 41 53. 858	1657.7	310 20 07.8	130 20 37. 6	Indian 11 ill 2	2322.0	3.365864
1908	82 32 24. 135	661.2	349 50 20. 2	169 50 27. 9	Cockroach (U. S. E.)	2573.8	3. 410577
			93 52 29. 9	273 49 39. 7	Pinelos 2	10053.9	4.002334
			109 19 24. 4	289 16 56. 0	Ant 2.	• 9259.0	3.966564
Marshall (U. 8. E.)	27 42 16.747	515.5	32 38 01.3	212 37 26. 1	Cockroach (U. S. E.)	3844.8	3.584872
1908	82 30 51.909	1422.2	89 53 46.1	269 50 13. 0	Pinelos 2	12557.7	4.098909
			101 50 24. 5	281 47 13. 2	Ant 2	11508.5	4. 081019
			217 32 53. 1	37 33 50. 5	Mangrove (U. 8. E.)	5550.9	3.744366
Moody's house cupola	27 43 05.357	164.9	49 14 09	229 12 56	Indian 1 1 ill 2	5671	3.75369
1908	82 28 42.784	1172.1	139 51 20	319 48 13	Cedar Point (U. S. E.)	17037	4.23139
			155 18 40	335 16 45	Picnic Island	16180	4.20897
			176 58 27	356 58 25	Mangrove (U. S. E.)	2908	3.46365
St. Petersburg:
Detroit House tower	27 46 16.324	502.5	224 45 08. 3	44 47 37. 5	Picnic Island	12425.5	4.094315
1908	82 38 09. 515	260.5	250 41 52. 5	70 46 24. 2	Gadsden 2	16901.5	4.227926
			280 55 00.2	100 59 21.5	Mangrove (U. 8. E.) Indian Hill 2	15651.1	4.194544
			310 26 46.4	130 29 57. 1	14762. 2	4. 169152
			316 55 21.9	136 58 10. 3	Cockroach (U. 8. E.)	14523.3	4.162065
Power house stack	27 46 16.050	494.0	223 48 26. 4	43 50 50.8	Picnic Island	12238.7	4.087734
1908	82 37 59. 426	1627.2	281 04 55. 7	101 09 12.3	Mangrove (U. 8. E.)	15378.3	4.186908
			311 07 41.1	131 10 47. 1	Indian Hill 2	14547.6	4.162790
			317 42 28.2	137 45 11.9	Cockroach (U. S. E.)	14329.8	4.156240
School!) ouse cupola	27 46 21.720	SOLA	226 50 23.8	46 53 01.2	Picnic Island	12657.7	4.102354
1908	82 38 27. 241	746.9	251 44 44. 4	71 49 24. 4	Gadsden 2	17307.6	4.238236
			281 10 00. 5	101 14 30.1	Mangrove (U.S. E.)	16150.2	4.208421
			309 44 07.7	129 47 26. 7	Indian Hill 2	15240.5	4.182999
			315 59 54.0	136 02 50.7	Cockroach (U. 8. E.)	14978.0	4.175454

' No check on this position.

TRIANGULATION ALONG THE WEST COAST OF ELOEIDA. TAMPA BAY— Continued

25

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Supplementary points — Continued
St. Petersburg— Continued Sibley House tower 1908	27 46 07. 835 82 38 20. 608	241.2 564.3	0 / // 224 53 33. 1 250 12 41. 4 279 47 01.1 308 54 53. 6 315 20 38. 7	44 56 07. 4 70 17 18. 3 99 51 27. 6 128 58 09. 5 135 23 32. 3	Picnic Island Gadsden 2 Mangrove (U. S. E.) Indian Hill 2 Cockroach (U.S.E.)	Meters 12824. 9 17275. 1 15903. 0 14829. 2 14545. 4	4. 108055 4. 237421 4. 201478 4.171117 4. 162727
Waterworks standpipe 1908	27 46 24.397 82 38 24. 472	751.0 670.0	226 52 40. 8 251 55 39. 6 281 30 26. 1 310 09 23. 3 316 25 34.0	46 55 17. 2 72 00 18. 4 101 34 54. 4 130 12 40. 7 136 28 29. 0	Picnic Island Gadsden 2 Mangrove (U.S. E.) Indian Hill 2 Cockroach (U. S. E.)	12546. 0 17209. 8 16101. 1 15235. 3 14985. 1	4. 098504 4. 235777 4.206856 4. 182852 4. 175659
South Cut, lower No. 6 light 1908	27 47 39. 362 82 34 20. 72S	1211.6 567.4	337 45 06. 2 344 30 36. 1 36 12 19.4	157 46 30. 4 164 31 38. 1 216 10 45.1	Indian Hill 2 Cockroach (U. S.E.) Ant 2	13113. 2 13664. 1 9385.2	4. 117708 4. 135581 3. 972444
South Cut, upper No. 8 light 1908 ^	27 48 37. 006 82 34 22. 988	1139.0 629.2	262 41 47. 5 340 07 57. 2 346 03 05. 6 30 23 22. 2	82 44 33. 8 160 09 22. 6 166 04 08. 8 210 21 49. 1	Gadsden 2 Indian Hill 2 Cockroach (U.S.E.) Ant 2	9831.5 14791. 6 15396. 1 10836. 1	3.992621 4.170016 4. 187410 4. 034875
North Cut, lower No. 10 light 1908	27 49 50. 848 82 34 01. 238	1565.2 33.9	318 10 24. 7 27 36 38. 1 103 19 07. 1 221 23 49. 0	138 12 50. 5 207 34 54. 7 283 18 28. 4 41 24 22. 3	Mangrove (U.S.E.) Ant 2 Cedar Point (U.S.E.) Picnic Island	12848. 2 13113. 4 2332. 3 2956.4	4. 108842 4.117714 3. 367788 3. 470768
Steamer "Cool" wreck bea- con 1908	27 48 03. 023 82 30 10. 222	93.0 279.9	231 01 58. 5 340 17 43.7 56 13 38. 8 114 11 21.2 141 44 49.3	51 02 46. 8 160 18 21.8 236 10 07. 9 294 08 54. 8 321 43 34. 8	Gadsden 2 Mangrove (U. S. E.) Ant 2 Cedar Point (U.S.E.) Picnic Island	3645.1 6647. 1 14924. 0 9418. 2 7051. 4	3. 561706 3. 822633 4. 173884 3. 973968 3. 848277
Lowne (U. S. E. east base) 1908	27 49 33. 235 82 30 08. 205	1023.0 224.5	346 23 55. 5 48 22 30. 0 97 08 05. 8	166 24 32. 7 228 18 58.0 277 05 38. 2	Mangrove (U.S.E.) Ant 2 Cedar Point (U.S.E.)	9295.4 16669. 8 8713. 9	3. 968269 4. 221930 3. 940215
Gadsden (U.S. E.) 1908	27 49 18. 497 82 28 21.550	569.4 589.8	211 26 25. 4 260 05 38. 8 4 53 44. 6 77 25 41.7	31 28 02. 0 80 07 54. 7 184 53 32. 1 257 25 39. 3	Ball Alafla 2 Mangrove (U.S.E.) Gadsden 2	10849. 5 8088. 9 8612. 7 143.5	4. 035410 3. 907890 3. 935138 2. 156916
Young (U. S. E.) 1908	27 48 41. 115 82 24 10. 320	1265. 5 282.5	45 42 49. 0 99 04 53. 9 203 17 37.0	225 40 39. 4 279 02 54. 3 23 17 55. 7	Mangrove (U.S.E.) Gadsden 2 Alafla 2	10638. 4 7104. 9 2765.0	4. 026877 3. 851557 3. 441694
Alalia River light 1908	27 50 11.051 82 24 28. 699	340.2 785.3	75 48 24. 8 98 52 10. 0 129 12 04.5 278 09 04. 4	255 46 33. 7 278 50 24. 9 309 10 02. 1 98 09 31. 6	Gadsden 2 Catfish Point (U.S.E.) Ballast Point 2 Alafla 2	6717. 9 6228. 9 9236.2 1612. 6	3. 827232 3. 794412 3. 965495 3. 207540
01d(U.S.E.) 1908	27 51 51. 407 82 24 06. 100	1582. 4 166.9	343 34 37. 2 72 33 16. 7 109 28 15. 4 163 44 25. 8	163 34 53. 9 252 31 21.0 289 26 02. 4 343 44. 03. 0	Alafla 2 Catfish Point (U.S.E.) Ballast Point 2 Ball	3458. 9 7099.3 8247. 2 4738. 1	3. 538941 3.851217 3. 916307 3. 675607
Long Shoal beacon 1908	27 52 43.307 82 27 15. 201	1333.0 415.9	23 12 39. 5 113 49 07. 5 232 29 12. 1 308 36 44. 8	203 12 12. 2 293 48 23. 0 52 30 17. 9 128 38 29. 9	Catfish Point (U. S. E.) Ballast Point 2 Ball Alafla 2	4056.0 2845. 8 4847. 1 7874. 1	3.608097 3. 454201 3. 685480 3. 896200
Wall's, Judge, house chim- ney 1908	27 52 39. 966 82 29 01. 165	1230.2 31.9	245 37 12. 0 297 58 47. 7 340 15 31.4	65 39 07. 3 118 01 22.2 160 15 53. 6	Ball Alafla 2 Catfish Point (U. S. E.)	7402.7 10250. 5 3851.2	3. 869388 4. 010746 3. 585601
Ballast Point Hotel water tank 1908	27 53 22. 022 82 28 52. 622	677.9 1439.4	304 41 21. 7 304 55 49. 2 347 45 40. 6	124 43 52. 3 124 55 50. 2 167 45 58. 8	Alafla 2 Ballast Point 2 Catfish Point (U.S.E.)	10725.0 74.6 5033. 8	4. 030395 1. 872806 3. 701900
Tampa Yacht Club house flagstaff 1908	27 53 13.316 82 28 51.738	409.9 1415.2	189 19 21. 1 252 37 32. 1 303 34 04. 9 347 21 46. 1	9 19 21. 7 72 39 23. 0 123 36 35. 1 167 22 03. 9	Ballast Point 2 Ball Alafla 2 Catfish Point (U.S.E.)	228.3 6794. 8 10554. 6 4767.0	2. 358438 3.832175 4.023441 3.678241
Tampa Cut No. 2 light 1908	27 54 17. 992 82 26 17. 735	553.8 485.1	269 04 33. 9 329 40 18. 1 25 31 13. 6 67 05 10. 0	89 05 12. 7 149 41 36. 3 205 30 19. 4 247 03 58. 5	Ball Alafla 2 Catfish Point (U.S.E.) Ballast Point 2	2273.5 9070.4 7360.0 4532.8	3. 356700 3. 957626 3.866880 3.656371
Tampa Cut No. 4 light 1908	27 55 15.927 82 26 49.311	490.2 1348. 3	299 06 30. 1 15 18 46. 3 43 01 19. 6	119 07 23.8 195 18 06. 9 223 00 23. 0	Ball Catfish Point(U. S.E.) Ballast Point 2	3590.2 8735. 6 4853.6	3.555113 3. 941292 3. 686068
Richard's house (The Ga- bles) cupola. 1908	27 55 00.050 82 29 35.061	1.6 958.7	279 17 54. 6 312 25 24.4 338 13 59. 2	99 20 05. 9 132 28 15.0 158 14 20. 1	Ball Alafla 2 Ballast Point 2	7771.6 13519.6 3295. 1	3.890512 4. 130905 3.517864
Spanish Sanitarium south gable 1908	27 55 04. 099 82 29 31. 761	144.6 868.5	280 27 25. 8 313 07 40. 3 340 32 31.5	100 29 35. 0 133 10 29. 4 160 32 50. 9	Ball Alafla 2 Ballast Point 2	7707. 3 13550. 6 3397. 3	3.886901 4. 131959 3.531129

26

U. S. COAST AND GEODETIC SURVEY — SPECIAL PUBLICATION NO. 16.

TAMPA BAY— Continued

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Supplementary point*— Continued Spanish Sanitarium west tank 1908	27 55 04. 125 82 29 32.911	127.0 899.9	o r ft 280 17 09.9 312 58 56. 7 344 56 19. 3 339 56 30. 0	© / // 100 19 20. 2 133 01 46. 3 164 56 56. 4 159 56 49. 9	Ball Alalia 2 Catfish Point (U.S.E.) Ballast Point 2	Sldirs 7735.0 13561.5 8349.0 3391.3	3.888462 4.132308 3.921635 3.530362
Tampa west base (U. S. E.) 1908	27 54 51.328 82 27 54.901	1580.0 1501.2	281 20 19. 9 3 49 18. 7 28 31 45.6	101 21 44.3 183 49 10.0 208 31 19. 7	Ball Catfish Point (U.S.E.) Ballast Point 2	o028.6 7685.6 3177. 4	3.701445 3.885676 3.502078
Tampa east base (U. S. E.) 1908	27 55 28.576 82 27 01.381	878.8 37.8	301 38 06. 4 329 59 55. 7 12 38 21. 6	121 39 05.7 150 01 34.3 192 37 47. 8	Ball Alafia 2 Catfish Point (U.S.E.)	4071. 9 11548. 6 9033.8	3.609794 4.062528 3.955869
Tampa Bay Hotel electric plant stack 1908	27 56 52. 146 82 27 49. 197	1605.2 1344.8	314 35 48. 1 330 36 19. 0 3 21 32. 7 14 24 58.3	134 37 09. 8 150 38 20. 0 183 21 21. 2 194 24 29. 6	Ball Alafia 2 Catfish Point (U.S.E.) Ballast Point 2	6705.0 14430.7 11407.0 6722.2	3.826401 4.159288 4. 057172 3. 827514
Tampa Bay Hotel north tower 1908 Tampa: Morrison Villa tower 1908	27 56 47.914 82 27 51. 439 27 56 01.910 82 28 18. 136	1474. 9 1406.2 58.8 495.9	313 25 40. 2 330 08 10. 8 3 05 11. 1 14 10 52. 4 299 35 36. 5 324 27 55. 6 359 16 52. 2 10 04 30.9	133 27 03. 0 150 10 12.9 183 05 00. 7 194 10 24. 8 119 37 11.8 144 30 10. 2 179 16 54.3 190 04 15. 8	Ball Alafia 2 Catfish Point (U.S.E.) Ballast Point 2 Ball Alafia, 2 Catfish Point (U.S.E.) Ballast Point 2	6658.6 14347.9 11273.5 6580.8 6400.8 13549.5 9841.9 5042.1	3.823383 4. 156788 4.052058 3. 818282 3.806235 4. 131923 3.993078 3.702609
Hyde Park scheolhouse 1908	27 56 20. 467 82 28 05. 732	630.0 156.7	305 31 51.8 326 59 11.2 1 11 16.7 12 26 32. 6	125 33 21.3 147 01 20.0 181 11 13.0 192 26 11. 7	Ball Alafia 2 Catfish Point (U.S.E.) Ballast Point 2	6422.5 13830. 6 10414. 5 5668.6	3.807702 4.140842 4.017640 3. 753476
Electric power house stack 1908	27 56 39. 118 82 27 36. 666	1204.1 1002.4	5 15 32.9 18 15 53. 6 314 10 52. 5 331 01 32. 1	185 15 15.7 198 15 19. 1 134 12 08. 4 151 03 27.4	Catfish Point (U.S.E.) Ballast Point 2 Ball Alafia 2	11032.8 6433.6 6179. 7 13913. 6	4.042687 3.808456 3.790968 4.143440
Tower, Whiting and Franklin Streets 1908	27 56 43. 458 82 27 25.398	1337.7 694.2	317 07 09. 5 332 24 21.9 20 25 20.4	137 08 20. 1 152 26 11.8 200 24 40.6	Ball Alafia 2 Ballast Point 2	6059.9 . 13885.3 6661.7	3.782465 4.142556 3.823588
First Presbyterian Church spire 1908	27 57 01.053 82 27 27. 735	32.4 758.2	319 57 09. 2 333 10 43.9 18 25 39. 6	139 58 20. 9 153 12 35.0 198 25 00. 9	Ball Alafia 2 Ballast Point 2	6508.2 14396.2 7151.3	3.813461 4.158248 3.854388
Courthouse dome 1908	27 56 52. 608 82 27 28. 224	1619. 4 771.5	318 20 36.0 332 39 22. 9 6 13 04.5 19 00 16. 5	138 21 47. 9 152 41 14. 2 186 12 43.3 198 59 38.0	Ball Alafia 2 Catfish Point (U.S.E.) Ballast Point 2	6320.3 14170. 9 11469.1 6900.9	3.800738 4. 151397 4.059530 3.838903
Episcopal Church spire 1908	27 56 56. 178 82 27 23.952	1729.3 654.7	319 47 44.2 333 16 43. 0 6 44 00.5 19 36 43. 8	139 48 54. 1 1.53 18 32. 2 1,86 43 37. 2 199 36 03. 3	Ball Alafia 2 Catfish Point (U.S.E.) Ballast Point 2	6326.8 14215. 7 11591.5 7043.2	3.801183 4. 152767 4.064139 3.847770
Catholic Cathedral dome 1908	27 56 56.818 82 27 26.526	1749.0 725.1	319 25 37.8 333 03 40.5 6 22 36.4 19 01 07. 0	139 26 48. 9 153 05 30. 9 186 22 14.3 199 00 27. 7	Ball Alafia 2 Catfish Point (U.S.E.) Ballast Point 2	6387.4 14265.0 11603.0 7038.5	3.805323 4.154271 4.064569 3. 847479
Convent dome 1908	27 57 01.047 82 27 21.482	32.2 587.2	321 07 25. 8 333 47 23.0 6 58 30. 0 19 43 05. 6	141 08 34.6 153 49 11. 1 186 58 05. 6 199 42 24. 0	Ball Alafia 2 Catfish Point (U.S.E.) Ballast Point 2	6399.4 14319. 7 11748.3 7207.0	3.806141 4. 155935 4.069975 3.857766
Sawmill, Central Avenue and Polk Streets, tall stack 1908	27 57 06.675 82 27 11.261	205.5 307.8	8 12 16.8 21 17 22. 1 324 03 43. 8 335 05 49. 2	188 11 47. 7 201 16 35. 7 144 04 47. 8 155 07 32.6	Catfish Point (U. S. E.) Ballast Point 2 Ball Alafia 2	11956.9 7467.2 6367.3 14355.5	4.077620 3. 873156 3.803954 4. 157018
Post Office building, cen- tral flagstaff (west pole) 1908	27 56 58.936 82 27 27.864	1813.9 761.7	319 33 18.6 6 09 45.4 18 34 04.9	139 34 3J0. 4 186 09 24.1 198 33 26.3	Bail Catfish Point (U.S.E.) Ballast Point 2	6460.5 11663.5 7088.2	3.810266 4.066829 3.850533
Methodist Church spire 1908	27 57 08.553 82 27 32.858	263.3 898.2	320 18 05.2 333 05 48. 9 5 21 29. 8 16 49 03.5	140 19 19.3 153 07 42.3 185 21 10. 7 196 48 27. 2	Ball Alafia 2 Catfish Point (U.S.E.) Ballast Point 2	6?75.2 14665.5 119*4.6 7329.0	3.830919 4.166296 4.077173 3.865043
Crematory stack 1908	27 57 18. 796 82 26 59.078	578.6 1614.9	328 22 47.0 336 64 20. 2 9 29 08.6 22 33 10.5	148 23 45.3 156 55 57. 8 189 28 33.7 202 32 18. 4	Ball Alafla 2 Catfish Poirt (U.S.E.) Ballast Point 2	6492.3 14560.9 123-'6. 9 7937.7	3.812400 4.163188 4.092610
Central Avenue Church spire 1908	27 57 46.069 82 27 19.342	1418. 1 528.7	328 08 11.9 6 29 39. 8 16 67 01.0	148 09 19. 7 186 29 14.4 196 66 18.4	Ball Catfish Point (U.S.E.) Ballast Point 2	7497. 7 13131.5 8641.3	3.874927 4.118314 3.931525
Michigan Avenue school- house 1908	27 57 58.892 82 27 27.618	1812. 8 752.1	328 16 10. 1 336 04 31.1 14 49 19.8	148 17 21.7 166 06 22. 0 194 48 41.0	Ball Alafla 2 Ballast Point 2	7950.9 16002.8 8859.8	3.900417 4. 204197 3.947426

TRIANGULATION ALONG THE WEST COAST OF FLORIDA. TAMPA BAY— Continued

27

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm 3. 923805 4. 204249 4. 094768 3. 877964
Supplementary points — Con West Tampa Waterworks stand pipe 1908	27 57 25. 690 82 28 38. 425	790.8 1050.4	313 09 35. 0 328 12 56. 1 356 52 20. 6 2 28 59. 7	133 11 19.8 148 15 20. 2 176 52 32. 2 182 28 54. 1	Ball A l'tfi'i 9 Catfish Point (U.S.E.) Ballast Point 2	Meters 8390.8 16004.8 12438. 5 7550. 3
Ybor City Brewery tower 1908	27 57 31.279 82 26 45.560	962.8 1245. 4	332 50 07. 7 10 49 59. 8 23 52 17.3	152 50 59. 7 190 49 18. 7 203 51 18.9	Ball Catfish Point (U.S.E.) Ballast Toint 2	8645.9 12820. 3 8436.5	3. 822554 4. 107897 3. 926160
Ybor City iron water tank, Twelfth Avenue and Twenty-first Street 1908'	27 57 47. 468 82 26 09.318	1461.2 254.7	342 19 31.5 343 03 21.0 14 33 56. 0 28 12 34.2	162 20 06. 5 163 04 35.5 194 32 57. 9 208 11 18.8	Ball Alafia 2 Catfish Point (U.S.E.) Ballast Point 2	6729.1 14925. 1 13524. 6 9319. 7	3. 827954 4.173918 4.131126 3. 969403
Ybor City water tank (tall iron), Ninth and Four- teenth Streets 1908	27 57 39. 770 82 26 41.412	1224.2 1132.0	334 41 01.3 339 34 34. 2 8 14 28.0 11 06 22. 2 23 51 30. 2	154 41 51.3 159 36 03. 6 188 13 28. 7 191 05 39. 0 203 50 29. 8	Ball Alafia 2 Mangrove (U.S.E.) Catfish Point (U.S.E.) Ballast Point 2	6830.2 14981. 7 24261. 2 13098. 5 8721.4	3. 834435 4.175560 4. 384913 4.117220 3. 940585
Ybor City tobacco factory cupola 1908	27 56 51.110 82 26 04. 372	1573. 3 119.5	337 48 27. 1 17 17 58.3 35 01 42. 1	157 48 59. 8 Ball 197 16 57.9 I Catfish Point (U.S.E.) 215 00 24. 4 Ballast Point 2	5050.8 11893. 0 7910. 8	3. 703358 4. 075292 3. 898222
Port Tampa west base (U.S. E.) 1908 Port Tampa: Oil tank, top (large yel- low, east) 1908	27 50 19.316 82 31 57. 992 27 51 34. 661 82 32 19.196	594.6 1586.9 1066.9 525.2	333 34 53. 4 37 06 44. 6 86 34 22. 2 133 25 40. 6 62 18 08.1 190 49 47. 9 40 33 40. 7	153 36 21.8 217 04 03.7 266 32 45. 9 313 25 16.3 242 16 41.8 10 50 01.2 220 33 26. 4	Mangrove (U.S.E.) Ant 2 Cedar Point (U.S.E.) Picnic Island Cedar Point (U.S.E.) Dave Picnic Island	11671. 1 15667. 5 5652.3 1951.3 5717.0 4129.9 1287. 1	4.067111 4. 195000 3. 752224 3.290320 3. 757170 3. 615942 3. 109610
Catholic Church spire 1908	27 51 51.379 82 31 34. 212	1581.5 936.0	54 10 54. 8 63 15 13.6 112 25 28. 1	234 10 19.5 243 13 26.2 292 22 15. 5	Picnic Island Cedar Point (U.S.E.) Dog	2550.0 7046.8 12192. 7	3. 406538 3. 847992 4. 086101
Electric power house stack 1908	27 51 54. 033 82 31 41.870	1663.2 1145.4	49 43 58. 7 32 42 23. 9 61 51 48. 7	229 43 27. 0 212 39 35.4 241 50 04. 8	Picnic Island Ant 2 Cedar Point (U.S. E.)	2435.3 18312.8 6898.5	3. 386545 4. 262754 3. 838757
Water tank (red iron, head of slip) 1908	27 51 43.511 82 32 30. 532	1339. 3 835.3	58 20 32. 4 116 41 25.2 196 00 50. 7	238 19 11.3 296 38 38. 9 16 01 09.3	Cedar Point (U.S.E.) Dog Dave	5582. 4 10891. 1 3936. 7	3. 746820 4. 037071 3.595136
Long phosphate elevator west gable 1908	27 51 43. 129 82 32 48. 826	1327. 6 1335. 8	55 31 52. 1 117 58 40. 2 202 40 53. 1 1 12 51.0	235 30 39. 6 297 56 02. 5 22 41 20. 2 181 12 50.5	Cedar Point (U.S.E.) Dog Dave Picnic Island	5156. 4 10451.9 4113.9 1238.8	3.712347 4.019194 3.614256 3. 093004
Long phosphate elevator east gable 1908	27 51 43.547 82 32 45.099	1340.4 1233.9	56 02 44. 5 117 39 23.0 201 25 31.9 5 50 58. 2	236 01 30. 3 297 36 43. 6 21 25 57. 3 185 50 56.0	Cedar Point (U.S.E.) Dog Dave Picnic Island	5248. 0 10536. 0 4063.7 1257.9	3.719990 4. 022677 3. 608923 3.099662
East elevator, end of dock 1908	27 51 39.378 82 33 08. 406	1212.1 230.0	119 59 30.6 208 28 46. 4 335 35 54. 4 52 58 01.9	299 57 02. 1 28 29 22. 8 155 36 03.1 232 56 58. 5	Dog Dave Picnic Island Cedar Point (U.S.E.)	10039.2 4449.8 1233.2 4654.1	4.001698 3. 648339 3.091041 3. 667835
West elevator, end of dock 1908	27 51 40. 084 82 33 11.459	1233.8 313.5	120 07 24. 6 209 33 10. 2 332 36 52. 0 52 07 27. 8	300 04 57. 5 29 33 48. 0 152 37 02. 1 232 06 25. 8	Dog Dave Picnic Island Cedar Point (U.S.E.)	9956.0 4471.3 1289.3 4601.0	3.998086 3. 650436 3.110339 3.662850
Frazier's Beach, north house chimney i 1908	27 56 45. 14 82 32 19. 19	1389. 5 524.6	66 22 23 351 58 16	246 19 31 171 58 29	Dog Dave	10959 5555	4. 03979 3. 74469
Rocky Point, house chim- ney 1908	27 57 43. 018 82 34 14. 382	1324. 2 393.1	7 46 12. 4 48 07 46. 6 331 39 58. 8	187 45 39. 6 228 05 48. 5 151 41 06. 0	Cedar Point (U. S. E.) Dog Dave	14126. 6 9253.5 8272. 8	4. 150037 3. 966304 3.917650
Green Springs, chimney Mrs. Cohen's house1 1908	27 59 22. 87 82 41 19. 93	704.0 544.6	284 19 00 332 50 10	104 22 17 152 51 31	Rocky Point Dog	11868 10398	4. 07437 4.01694
Green Springs, top of water tank' 1908	27 59 25.36 82 41 17. 32	780.6 473.3	284 45 41 333 22 41	104 48 57 153 24 01	Rocky Point Dog	11818 10434	4.07253 4.01843
	BOCA	CEIGA	BAY TO CL	EARWATER HARBOR
Principal points
Turn 1873	27 42 14. 710 82 43 33. 168	452. 8 908.7	269 45 59. 9 16 44 27. 7	89 48 21. 1 196 43 29. 3	Pinelos Egmont Key L. H.		8324.2 11980. 1	3.920341 4. 078459

1 No check on this position.

28

U. S. COAST AND GEODETIC SURVEY — SPECIAL PUBLICATION NO. 16. BOCA CEIGA BAY TO CLEARWATER HARBOR-Continued

Station

Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
27 42 22.809 82 40 51. 865	702.0 1420.9	o / // 33 53 49.0 86 46 54.9	0 / // 213 51 35. 7 266 45 39.9	Egmont Key L. H. Turn	Meter* 14119.2 4426.3	4. 149810 3.646040
27 40 07.022 82 41 39.486	216.1 1082.2	41 03 27. 1 141 36 27. 2 197 20 09. 1 232 44 33.2	221 01 36.0 321 35 34. 4 17 20 31.2 52 46 01. 5	Egmont Key L. H. Turn Shell Point Pinelos	10000.0 5015.1 4378.6 6545.2	4.000012 3.700279 3.641331 3.815926
27 43 08. 782 82 41 46.237	270.3 1266.7	313 31 42.5 358 06 21.8 60 24 13. 2	133 32 07. 8 178 06 25.0 240 23 23.5	Shell Point Bird Turn	2054.6 5597.7 3369.2	3.312720 3. 748013 3.527533
27 43 24.022 82 43 43.386	739.4 1188.4	278 18 32. 1 352 31 28.2	98 19 26. 5 172 31 32.9	Point Turn	3243. 2 2151.8	3.510974 3.332794
27 44 14.345 82 42 41.943	441.6 1148.8	322 54 11.6 20 51 46. 4 47 22 40.8	142 54 37.5 200 51 22. 5 227 22 12. 3	Point Turn Oyster	2530.0 3940.8 2287.3	3.403123 3.595579 3.359324
27 44 50.626 82 44 52. 284	1558.3 1431.9	287 21 48. 2 324 42 02. 2	107 22 48. 8 144 42 34.3	Sand Oyster	3740.4 3266.1	3.572917 3.514030
27 45 10.413 82 44 23.352	320.5 639.5	301 51 01.0 341 30 52.3 52 27 07. 1	121 51 48.2 161 31 11.0 232 26 53. 7	Sand Oyster Mound	3269.9 3452. 9 999.4	3.514531 3.538188 2.999726
27 45 57.987 82 45 20.050	1784.9 549.0	313 19 15.8 339 51 33.5	133 19 42.2 159 51 46. 5	Crab Mound	2134.2 2208.5	3.329240 3.344088
27 46 32. 672 82 44 48. 674	1005.7 1332.7	344 41 00.8 1 48 09. 2 38 49 28. 2	164 41 12.6 181 48 07. 7 218 49 13.6	Crab Mound Queen	2625.2 3142.6 1370. 4	3. 419167 3. 497292 3.136838
27 47 13.162 82 45 11.943	405.1 327.0	.332 55 28.0 5 28 47.3	152 55 38. 8 185 28.43.5	Cedar Queen	1399.7 2324.6	3.146035 3.366346
27 47 18. 215 82 46 23.993	560.6 656.8	274 30 15. 1 298 14 16. 4 324 39 42.7	94 30 48.7 118 15 00.8 144 40 12. 5	Sague Cedar Queen	1978.6 2962.3 3027.1	3.296360 3. 471635 3.481030
27 48 00. 996 82 46 22.014	30.7 602.6	307 30 16. 1 2 21 21.2	127 30 48. 8 182 21 20.3	Sague Snake	2418.1 1317.9	3.383480 3.119895
27 47 51. 592 82 46 59. 564	1588.0 1630.5	254 16 11.8 291 52 08. 0 316 31 56.0	74 16 29. 3 111 52 58.2 136 32 12. 6	Turtle Crawl Sague Snake	1067.9 3174.8 1415.5	3.028513 3.601713 3.150915
27 48 33. 692 82 47 30.632	1037.1 838.4	298 10 46. 5 326 43 24.3	118 11 18.5 146 43 38.8	Turtle Crawl Mast	2130.9 1550.0	3.328557 3.190332
27 48 16.835 82 47 47. 554	518.2 1301.6	221 45 11.3 281 45 24. 5 300 36 03.8	41 45 19. 2 101 46 04. 4 120 36 26. 2	Double Turtle Crawl Mast	695.5 2391.7 1526.2	2.842315 3.378703 3.183620
27 48 52.975 82 47 53.274	1630.6 1458.1	313 45 51. 2 351 59 19.9	133 46 01.8 171 59 22. 6	Double Pole	858.1 1123.4	2.933546 3.050534
27 48 39. 146 82 48 33. 585	1205.0 919.3	248 54 01. 7 275 33 39. 8 298 35 25.7	68 54 20.5 95 34 09. 2 118 35 47.2	Stump Double Pole	1182.6 1731.3 1435.0	3.072841 3.238360 3.156841
27 49 32. 203 82 48 18.395	991.3 503.4	330 20 29.3 14 16 58.5	150 20 41.0 194 16 51. 4	Stump Extra	1389.5 1685.2	3.142861 3.226664
27 49 28.640 82 49 17.726	881.6 485.2	266 07 65.3 295 24 02. 1 321 34 59. 3	86 08 23.0 115 24 41.4 141 35 19.9	Crow Stump Extra	1627.4 2558.8 1944.4	3.211605 3.408040 3.288777
27 50 17.013 82 49 36.600	523.7 1001.6	302 47 46. 5 340 52 04. 1	122 48 23.0 160 52 11'. '.i	Crow Pass	2646.1 1576.0	3.405877 3.197560
27 50 08.808 82 50 09.499	271.2 259.9	254 15)37.6 290 19 35.3 311 06 24.2	74 19 53.0 110 20 27.2 131 06 48. 4	Faint Crow Pass	935.0 32*2. 5 1880.5	2.970820 3.510885 3.274264
27 50 29.565 82 50 04.734	909.8 129.5	296 37 49. 2 11 32 28.6	116 38 02.4 191 32 26. 4	Faint Indian	861.2 651.8	2.935109 2.814102
27 50 23.928 82 50 20.717	736.5 566.9	248 23 40.6 279 59 46.6 326 35 29. 1	68 23 48.0 100 00 07.2 146 35 34.3	Fisherman Faint Indian	470.4 1225.8 557.5	2.672473 3.068431 2.746260
27 50 41.950 82 50 34.642	1291.3 947.9	294 59 34.4 325 30 54.2	114 59 48.3 145 31 00.7	Fisherman Cutter	902.9 673.0	2.955656 2.828000
27 50 58.283 82 50 21.367	1794.0 584.9	332 45 54.6 359 02 14.6 35 60 69.0	152 46 02.3 179 02 14.9 215 60 52.8	Fisherman Cutter Twice	994.5 1057.6 620.2	2.997607 3.024327 2.792558
27 51 20.169 82 50 48.275	620.8 1320.8	312 27 26.1 342 24 22.7	132 27 38.7 162 24 29. 1	Creek Twice	997.9 1234.1	3.091359

Principal point* — Contd

Shell Point 1873

Bird

1873

Point 1873

Oyster 1873

Sand

1873

Mound 1873

Crab 1873

Queen 1873

Cedar 1873

Sague 1873

Snake 1873

Turtle Crawl 1873

Mast 1873

Double 1873

Pole

1873

Stum:

mp

Extra 1873

Crow 1873

Pass

1873

Faint 1873

Indian 1873

Fisherman 1873

Cutter 1873

Twice 1873

Creek 1873

Cute 1873

TRIANGULATION ALONG THE WEST COAST OF FLORIDA. BOCA CEIGA BAY TO CLEARWATER HARBOR— Continued

29

Station	Latitude and longitude	Sec- onds in meters	Azimuth	Back azimuth	To station	Distance	Loga- rithm
Principal points — Contd						Meters
Pines 1873	27 51 48.824 82 50 39. 161	1502.9 1071.4	342 37 20.3 15 47 09.5	162 37 28.6 195 47 05. 2	Creek Cute	1630.1 916.6	3.212221 2.962198
Narrows 1873	27 52 02. 129 82 50 58. 993	65.5 1613.9	307 02 45.4 347 12 31.5	127 02 54.7 167 12 36.5	Pines Cute	679.8 1324.5	2.832367 3.122046
Shortest 1873	27 52 16.633 82 50 53.319	512.0 1458.6	335 39 11.0 19 10 20.8	155 39 17.6 199 10 18.1	Pines Narrows	939.5 472.7	2. 972915 2.674544
Short 1873	27 52 22.141 82 51 01.825	681.5 49.9	306 04 38. 1 352 49 51.2	126 04 42.1 172 49 52.5	Shortest Narrows