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United States Coast Survey-Geographical Positions. Section I-Massachusetts Bay. Sketch A.

Latitude. Longitude.

Distance. Distance.

Name of station. Azimuth To station— Back azimuth. Distance.
o , , o r * o r * o a to Metres. Yards. Miles.
Roxbury, (tall-spired church, 42 1834.44 || 71 06 38.36 158 15 58 Corey's Hill................ 338 15, 16 3884.3 4247.8 2.41
Jamaica Plains.) 263 46 26 Sargent's Observatory........ 83 47 18 1796.1 1964.2 1.12
Roxbury, (chimney of labora- 42 1922.52 || 71 05 31.94 212 30 33 Powderhorn................. 32 33 15 10253.8 11213.3 6.37
tory.) 255 04 39 Dorchester Heights.......... 75 06 52 4669.0 5105.9 2.90
Roxbury, (Doctor Putnam's 42 1945.82 71 05 03.93 201 33 47 Powderhorn ---------------. 21 36 11 9304.0 | 10174.6 5.78
church.) 111 20 51 Corey's Hill.---------------- 291. 19 05 3864.4 4226-0 || 2.40
Roxbury, (new Unitarian || 42 1940.12 || 71 0430.68 109 57 24 Corey's Hill.---------------- 289 55 15 4638.9 5073.0 2.88
church.) 258 02 14 Dorchester Heights.......... 78 03 46 3178.2 3475.6 1.98
Brookline, (Doctor Peirce's 42 1936.18 71 07 31.47 172 33 40 Corey's Hill...--------------. 352 33 34 1717.8 1878.5 1.07
church.) 225 03 14 Powderhorn...--------------- 45 07 17 11647.6 12737.5 7.24
Governor's Island........ 42 21 06.33 71 00 17.96 53 12 14 Dorchester Heights.......... 233 10 55 3.341.5 3654.2 2.08
272 52 01 Deer Island.---------------- 92 54 08 4309.4 4712.6 2.68

Moon Head.-----------. 42 18 20.20 70 59 01.99 || 271 37 42 Nantasket.----------------- 91 41 07 6939.5 7588.8 4.31
161 15 34 Governor's Island............ 341 14 41 5412.4 5918.9 3.36
Pettick's Island, (flag on 42 1804.29 70 55 26.49 156 1951 Deer Island...--------------- 336 18 42 5895.8 6447.5 3.66
north end.) 261 44 11 Nantasket------------------ 81 45 09 2022.1 2211.3 1.26
George's Island.......... 42 19 09.17 || 70 55 21-22 || 143 47 57 Deer Island.---------------- 3.23 46 43 4211.3 4604.5 2.62
118 02 51 Governor's Island...--------- 297 59 33 7694.6 8414.6 4.78

Great Brewster......... 42 1959.98 || 70 53 24.06 || 109 31 14 Deer Island.---------------- 289 28 41 5483-4 5996.5 3.41
90 15 46 Dorchester Heights.......... 270 09 50 12150.5 13287.4 7.55

Point Allerton, (flag)..... 42 18 35.13 || 70 52 38.26 158 10 16 Great Brewster.............. 338 09 45 2819.9 3083.8 1.75 70 21 28 Nantasket.-------------- ... 250 20 34 1965.8 2149.7 1.22

United States Coast Survey.—Geographical Positions. Section I-Massachusetts Bay. Sketch A.

Name of station. Latitude. Longitude. Azimuth. To station— Back azimuth. Distance. Distance. Distance.
o r or o a to o a ra o a wo Metres. Yards. Miles.
Watertown, (flag on Gallop 42 1935.32 70 56 00.37 14827 01 Deer Island...--------------- 328 26 14 3040-9 3.325.4 1.89
Island.) 115 29 27 Governor's Island...--------. 295 26 34 6530.7 7141-8 4.06
Nix's Mate...--------------- 42 1951-58 || 70 56 19.84 112 57 29 Governor's Island.... ---..... 292 54 48 5918.2 6472.0 3.68
151 15 58 Deer Island.---------------- 331 15 24 2383.0 2606.0 1.48
Rainsford Island, (flag-staff). 42 1844.84 70 5646.32 172 35 14 Deer Island.---------------- 352 34 59 4183.5 4575.0 2.60
284 04 01 Nantasket------------------ 104 05 53 3948.0 4317.4 2.45
Long Island, (flag on south 42 18 37.53 || 70 58 16.08 || 277 05 48 Nantasket-----------------. 97 08 41 5930.8 6485.8 3.69
end of.) 148 43 11 Governor's Island.----------. 328 41 48 5372-3 5875.0 3.34
Long Island Light---------- 42 19 46.15 70 57 03.03 44 55 17 Blue Hill.-----------------. 2.24 48 55 18467.2 20195.2 11.48
93 48 39 Dorchester Heights...... ----| 273 45 10 7153.8 7823.2 4.44

Deer Island Beacon.-------. 42 20 21.47 || 70 56 57.32 106 47 36 Governor's Island............ 286 45 20 4796.3 5.245.1 2.98
166 08 47 Deer Island.---------------- 346 08 37 1202.3 1314.8 0.75

Boston Light.-------------- 42 1938.77 70 53 05-06 || 173 12 38 Nahant.-------------------- 353 12 02 10067.9 || 11009.9 6.26
55 14 32 Blue Hill------------------. 235 05 30 22515.7 24622.5 13.99
Barrel Beacon, (near Boston 42 1920.29 || 70 54 48.08 || 133 16 16 Deer Island.---------------- 313 14 41 4457.7 4874.8 2.77
light.) 113 27 23 Governor's Island.----------. 293 23 41 8229.4 8999.4 5.11
Outer Brewster------------ 42 20 27.50 70 52 19.98 28 48 29 Nantasket.----------------- 208 47 22 4710-8 5151.6 2.93
59 55 44 Great Brewster.------------ 239 55 01 1695.0 1853.6 1.05

Strawberry Hill, (barn) ----. 42 17 20.53 70 52 28.35 22 51 19 Crow Point.---------------- 202 50 41 3.365.4 3680.3 2.09
74 23 12 Great Quincy 254 20 19 6124.0 6697.0 3.81

ll's Island, (pole).-----. 42 19 46.62 70 55 29.27 261 48 26 Great Brewster..... -------. 81 49 50 2805.5 3166.4 1.80 Lovell's Island, (pole) 324 13 49 Nantasket...--------------- 144 14 50 3532.7 386.3.3 2.20

[graphic]

United States Coast Survey.—Geographical Positions. Section I–Massachusetts Bay. Sketch A.

- Name of station. Latitude. Longitude. Azimuth. To station- Back azimuth. Distance. Distance. Distance.
o , o, c - or o r or c - or Metres. Yards. Miles.
Spectacle Island, (pole).----| 42 1936.94 || 70 58 55.59 14538 54 Governor's Island ...........I 325 37 59 3340.8 3653-4 2.05
290 41 31 Nantasket------------------ 110 44 50 7258.3 7937.5 4.51
Thompson's Island, (flag)....| 4219 12.62 70 59 55.05 || 115 13 04 Dorchester Heights.......... 295 11 30 3537.5 3868.5 2.20
171 29 56 Governor's Island......----. 351 29 40 3547.4 3879.3 2.21
Thompson's Island, (polenear || 42 1905.56 || 71 00 04.94 | 120 06:28 Dorchester Heights.......... 300 05 01 3437.7 3759.4 2-14
Farm School.) 12 08 41 Squantum ------------------ 192 08 31 1693-6 1852.1 1.05
Green Island, (flag)-------. 42 21 09.18 70 53 11.95 11 16 48 Nantasket-----------------. 191 16 16 55.20.6 6037.2 3.43
86 49 04 Deer Island ---------------- 266 46 24 5454-0 5964.3 3.39

Graves Signal-------------. 42 21 51.68 || 70 51 51.49 154 01 50 Nahant -------------------- 334 00 24 6559.6 7173.4 4.08
23 29 20 Nantasket------------------ 203 27 55 7332.1 8018.2 4.56

Bluff Head, (flag).......... 42 2201.86 || 70 57 43.46 59 08 22 Dorchester Heights.......... 239 05 21 7237.0 7914-2 4-50 323 51 48 Nantasket------------------ 143 54 21 87.13.6 9528.9 5.41

Grover's Cliff.............. 42 23 20.83 || 70 57 47.57 || 348 59 55 Deer Island.------------- ... 168 50 20 4450.6 4867-1 2.77 239 08 01 Nahant -------------------- 59 10 37 6137.0 6711.2 3.81

Castle Island -------------- 42 20 17-28 || 71 00 24.59 || 253 45 31 Deer Island---------------- 73 47 42 4640.7 5074.9 2.88
79 03 12 Dorchester Heights.--------. 259 01 58 2571.0 2811.6 1.60

Point Shirley, (chimney of 42 21 29.84 || 70 57 59.13 65 02:21 Dorchester Heights.......... 244 59 30 6456.5 7060.6 4.01
foundry.) 77 10 07 Governor's Island.---------- 257 08 33 3258.8 3563.7 2.02
Apple Island, (flag).-------. 42 21 29.60 | 70 59 11.37 288 34 19 Deer Island ---------------. 108 35 41 2932.6 3207.0 1-82
57 05 19 Dorchester Heights.......... 237 03 15 5003.2 5471-4 3.11

South Boston Point......... 42 20 11.03 || 71 01 12.40 216 07 38 Governor's Island .......---- 36 08 16 2112.6 2310-3 3.31 176 36 06 Powderhorn ---------------- 356 35 53 7160.8 7830.8 4.45 Name of station. Latitude. Longitude. Azimuth. To station— Back azimuth. Distance. Distance. Distance.

[graphic]

o z o. o o or o z or o o or Metres. Yards. Miles.
Boston, State House........ 42 21 27.62 || 71 03 30.00 327 05 44 Dorchester Heights 147 06 35 3166.3 3462.6 1.97
73 13 59 Corey's Hill ---------------- 253 11 02 6004-5 6566.3 3.73
Boston, Faneuil Hall........ 42.21 34-40 || 71 03:02.68 339 0628. Dorchester Heights.......... 159 07 00 3069.8 3.357.0 1.91
204 36 51 Powderhorn ---------------- 24 37 53 5033.8 5504.8 3.13
Bunker Hill Monument..... 42 22 33.07 || 71 03:19.52 342 26 33 Dorchester Heights.......... 162 27 16 4906.4 5365.5 3.05
- 221 54 12 Powderhorn ---------------- 41 55 26 3716.8 4064.6 2.31
Boston, Cunard Wharf, (flag- || 42.21 48.10 || 71 02:05.86 3 35' 09 Dorchester Heights 183 35 03 3297.0 3605.5 2.05
staff.) 297 33 26 Governor's Island.---------- 117 34 39 2784.7 3045.3 1-73
Boston, Long Wharf Station. 42.21 35.67 || 71 02 32.71 197 17 13 Powderhorn ---------------- 17 17 55 4751.3 5.195.9 2.95
286 21 03 Governor's Island.---------- 106 22 34 3213.3 3514.0 2.00
Boston, Battery Wharf...... 42 21 59.33 71 02 38.16 296 59 51 Governor's Island.---------- 117 01 26 3600.5 3937.4 2.24
201 59 12 Powderhorn ---------------- 21 59 58 4105.3 4489.4 2.55
Boston, Cupola Lewis' Wharf 42.2145.46 || 71 02 38.96 290 30 06 Governor's Island......----. 110 31 41 3444-8 3767.1 2.14
200 09 48 Powderhorn ---------------- 20 10 33 4511.4 4933.5 2.80
Boston, Hollis Street Church. 42 20 57.44 || 71 03:32.08 || 314 1935 Dorchester Heights.......... 134 20 27 2472.0 2703.3 1.54
205 50 53 Powderhorn.--------------- 25 52 15 6352.4 6946.8 3.95
Boston, Hanover St. Church, 42 21 47.93 || 71 02 56.38 343 51 28 Dorchester Heights.....----. 163 51 56 3420.2 3740.2 2.13
(with cock on spire.) 205 09 18 Powderhorn ---------------- 25 10 16 4594.8 5024.7 2.86
Boston, Navy-yard.......... 42 22 22.00 || 71 02 45.27 208 40 09 Powderhorn ---------------- 28 40 59 3542.0 3873-4 2.20
304 41 39 Governor's Island......----. 124 43 18 4099.9 4483.5 2.55
South Boston, (Blind Asylum 42 2006.06 || 71 0211.80 187 1530 Powderhorn ---------------- 7 15 58 7391.5 8083.1 4.59
cupola.) 234 01 35 Governor's Island........... 54 02 51 3218-8 3520.0 2.00

[graphic]
[graphic]

United States Coast Survey.—Geographical Positions.

Name of station.

Section I-Massachusetts Bay. Sketch A.

Latitude. Longitude. Azimuth. To station— Back azimuth. Distance. Distance. Distance.

o or O - or O - or o r or Metres. Yards. Miles.
East Boston Point, (flag).... 42.21 56.27 | 71 01 23.71 286 48 50 Deer Island---------------- 106 51 42 6067.9 6635.7 3.77
315 40 49 Governor's Island........... 135 41 34 2153.3 2354.8 1.34

East Boston Station........ 42 22 51.15 || 71 01 50.68 298 12 55 Deer Island ---------------- 118 16 03 7292.3 7974.6 4.53
326 43 40 Governor's Island........... 146 44 43 3867.5 4229.4 2.40

Bird Island Signal.--------- 42 21 20.79 || 71 00 54.91 155 24 10 East Boston---------------- 335 23 33 3065.7 3352.6 1.91
93 24 07 State House.--------------- 273 22 22 3555-2 3887.9 2.21

Belle Isle Signal.----------- 42 22 55-34- *o 59 35.29 87 36 43 East Boston ---------------- 267 35 12 3100.3 3390.4 1.93
128 10 05 Powderhorn.--------------- 308 08: 47 3364.2 3679-0 2.09

Winisimet Willage, (church 42 23 25.36 71 01 57.13 3 41 23 Dorchester Heights.......... 183 41 11 6304-2 6894.1 3.92
with clock.) 55 44 39 Corey's Hill ---------------- 235 40 47 9527.4 || 10418.9 5.92
Waite No. 1.--------------- 42 25 58.87 71 03 36.93 277 22 49 Nahant.------------------- 97 29 20 13365.0 | 1.4615.6 8.30
28 57 44 Corey's Hill ---------------- 208 54 59, 11545.4 12625.7 7.17

Ten Hill Farm........----. 42 23 48.92 71 04 54.22 264 44 46 Powderhorn ---------------- 84 47 03 4667.6 5104.3 2.90
336 08 50 State House---------------- 156 09 47 4766-1 5212.1 2.96
Malden Bridge, (chimney of 42 23 32.59 || 71 03:48.56 253 32 04 Powderhorn ---------------- 73 33 37 3280.9 3587.9 2.04
yellow house at toll-gate.) 183 22 12 Waite No. 1.---------------- 3 22 20 4520.6 4943-6 2.81
Malden, (tall-spired church 42 25 36.88 || 71 03:40.53 314 25 46 Powderhorn ---------------- 134 27 13 4149.0 4537.2 2.58
with clock.) 30 18 31 Corey's Hill ---------------- 210 15 51 10914.9 || 11936.2 6.78
Somerville, (church on hill.) 42 23 10.19 || 71 05 31.36 31 14 27 Corey's Hill.--------------- 211 12 59 5729.7 6265.8 3.56
253 33 18 Powderhorn ---------------- 73 36 00 5731.8 6268.1 3.56

Somerville, (church near Mal- || 42 23 05.45 71 04 15.61 44 4314 | Corey's Hill.........------- 224 40 56 6687.3 73.13.0 4.16
den bridge.) 244 5052 | Powderhorn ---------------- 64 52 43 4159.3 4548.5 2.58

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