12

6.2625 6.3875 6.5125

3

4

5

6.6375 6.7625 6.8875 7.0125 7.1375
•2750 •4000 ⚫5250 ⚫6500 •7750 ⚫9000 ⚫0250 •1500 *2750
•2875 ⚫4125 ⚫5375 ⚫6625 *7875 •9125 ⚫0375 •1625 •2875
⚫3000 ⚫4250 *5500 ⚫6750 ⚫8000 •9250 *0500 •1750 •3000
⚫3125 ⚫4375 *5625 *6875 ⚫8125 *9375 ⚫0625 •1875 •3125

7.2625

760 | 770

⚫7000 7125 ⚫7250 ⚫3625 .4875 ⚫6125 ⚫7375 •3750 •5000 ⚫6250 •7500 780

•4625 ⚫5875

⚫8750 7.0000 •1250 •2500 •3750 •5000 •6250 7500

•4250 •5500 ⚫6750 ⚫8000

5

*4375

⚫5625 •6875 •8125

*9375

750
790 800 810 820 830 840 850
860
9.3875 9.5125 9.6375 9.7625 9.8875 10.0125 10.1375 10.2625 10-3875 10-5125 10.6375 10-76
•4000 ⚫5250 •6500 •7750 ⚫9000 ⚫0250 •1500 •2750 ⚫4000 *5250 •6500
•4125 ⚫5375 *6625 •7875 •9125 ⚫0375 •1625 •2875 •4125 ⚫5375 *6625
⚫9250 *0500 •1750 ⚫3000
0625

$775

-7250 ⚫8500 •9750 •1000 •2250
•4750
-7375 .8625 •9875 •1125 •2375 *3625 *4875
-7500 ⚫8750 5.0000 •1250 •2500 •3750 •5000
620 630 640 650
660 670 680
7-7625 7.8875 8.0125 8-1375 8.2625 8.3875 8.5125
-7750 •9000 ⚫0250 •1500 •2750 •4000 •5250
⚫7875 ⚫9125 *0375 •1625
•2875 •4125 *5375
⚫8000 •9250 •0500 •1750
•3000 •4250
•8125 *9375 ⚫0625 •1875 •3125 *4375

•3500

•5875 7125
⚫6000 •7250
•6125 ⚫7375
⚫6250 ⚫7500

•7000 ⚫8250
⚫8375

*9500

⚫0750

•2000

⚫9625 *0875 •2125

•5500
•5625

870 880 890 900 910 920 930 940 950

⚫8250 •9500 ⚫0750 •2000 ⚫3250 *4500 •5750 •7000 ⚫8250 ⚫9500 ⚫0750 •2000 •3250 ⚫8375 •9625 *0875 •2125 ⚫3375 *4625 *5875 7125 ⚫8375 •9625 *0875 •2125 ⚫3375 ⚫8500 •9750 •1000 •2250 ⚫3500 •4750 ⚫6000 •7250 •8500 ⚫9750 •1000 •2250 •3500 ⚫8625 9875 •1125 •2375 ⚫3625 *4875 *6125 ⚫7375 .8625 ⚫9875 •1125 •2375 •3625 ⚫8750 8.0000 •1250 •2500 •3750 •5000 •6250 •7500 •8750 9.0000 •1250 •2500 •3750 960 970 980 990

10.8875 11.0125 11-1375 11-2625 11.3875 11.5125 11-6375 11.7625 11.8875 12.0125 12-1375 12-2625 12.3875 ⚫9000 ⚫0250 •1500 •2750 ⚫4000 ⚫5250 •6500 •7750 ⚫9000 ⚫0250 •1500 •2750 ⚫4000 ⚫9125 ⚫0375 •1625 •2875 ⚫4125 *5375 ⚫6625 •7875 •9125 ⚫0375 •1625 •2875 •4125 •9250 ⚫0500 •1750 •3000 •4250 •5500 ⚫6750 ⚫8000 ⚫9250 ⚫0500 •1750 •3000 •4250 .9375 ⚫0625 •1875 .3125 •4375 *5625 •6875 ⚫8125 .9375 *0625 •1875 .3125

*4375

vi

TABLE C.

Showing the Length of a Degree, Minute, and Second, of Latitude and Longitude, for every Degree of the Quadrant, the Compression of the Earth being

assumed shr

81234 V

362769

6046.2

362776

6046 4

5 362785

6046-4

67840

11

100.79

12

13

0° 362759 6046:0 100-76 365147 6085.8
362761 6046:0 100.76 365091 6081.8
362764 6046.1 100.77 364925 6082.1
100-77 364649 6077.5
100-77 364263 6071-0
100.77 363767 6062.8
362796 6046.6 100.77 363161 6052.7
7 362810 6046-8 100.77 362445 6040.7
362826 6047.1 100-78 361619 6027.0
9
362844 6047'4 100.78 360683 6011.4
10 362864 6047-7 100.79 359637 5994.0
362886 6048.1
358480 5974.7 99.58 56 365219 6087.0 101.44
362910 6048.5 100-80 357217 5953.6 99.23 57 365276 6087.9
362937 6048.9 100-81 355846 5930-8 98.85
14 362966 6049.4 100-82 354368 5906.1 98.44
15 362997 6049.9 100.83 352782 5879.7 97.99

Lengths in Feet, of a

Degree. Minute. Second. Degree. Minute. (Second.

101.43 45° 364547 6075.8 101.26 258623 4310-4 71-84
101.41 46 361610 6076.8 101.27 254084 4234.7
101.37 47 364673 6077.9 101.29 249467 4157.8 69.30
101.29 48 364735 6078.9 101.31 244744 4079.1 67.99
101.18
364797 6079.9 101.32 240007 4000-1 66.67
101.05 50 364859 6081.0 101.34 235166 3919.4 65.32
100.88 51 364920 6082.0 101.36 230252 3837.5
100.68 52 364981 6083.0 101.38 225267 3754-4
100-45 53 365042 6084-0 101-40 220213 3670-2
100.19 54 365102 6085.0 101.41
99.90 55 365161 6086.0 101.42

203650 3394.2 56.57 101.46 198334 3305'6 55.09 365332 6088.9 101.48 192957 3215.9 53.60 365387 6089.8 101.50 187520 3125.3 365441 6090.7 101.52 183025 3050.4 16 363029 6050.5 100.84 351089 5851.5 97.53 61 365495 6091.6 101.53 177473 17 363063 6051.0 100.85 349290 5821.5 97.02 365548 6092.5 101.55 171866 2864-4 18 363099 6051.6 100.86 347385 5789-7 96.50 265599 6093.3 101.56 166206 2770-1 46.17 363137 6052.3 100.87 345374 5756.2 95.94 64 365649 6094-1 101.57 160495 2674.9 44.58 363177 6052.9 100.88 343258 5721.0 95.35 65 365697 6094.9 101.58 154736 2578.9 42.98 363219 6053.6 100.89 341038 5684-0 365743 6095.7 101.59 148929 2432.1 41.37 363262 6054'4 100.91 338715 5645.2 94.09 67 365788 6096.5 101.60 143076 2384-6 39.74 23 363306 6055.1 100.92 336289 5604.8 93:41 365832 6097.2 101.61 137178 2286.3 38.10 24 363351 6055'8 100.93 333760 5562.7 92.71 365875 6097.9 101.63 131236 2187.3 36.45 363397 6056'6 100.94 331130 5518.8 125252 2087.5 34.79 328400 5473.3 325570 5426.2

28 363546 6059-1 100.98 322641 5377.3 89.62

29 363599 6060.0

100.99 319613 5326.9

30 363653 6060.9

101.01 316487 5274.8 363707 6061.8 101.02 313265 5221.1

363933 6065.5

32 363762 6062.7 101.03 309948 5165.8 86.10
33 363818 6063.6 101.05 306537 5108.9 85.15
34 363875 6064.6

101.07 303032 5050.5 84.17
101.09 299435 4990.6

83.18

364113 6068.5 101.13 364174 6069'6 101.15 364235 6070.6 101.17

36 363992 6066.5 101.10 295746 4929.1 37 364052 6067.5 101.11 291966 4866.1 288098 4801.6

284142 4735.7 78.93 84

280098 4668.3 77.80

364297 6071.6 101.19

275969 4599.5 76.66

42 364359 6072.6 101.21 271756 4529.3 75.49 43 364421 6073.7 101.22 267460 4457-7 74.29 44 364484 6074-7 101.24 263082 4384.7 73.08 364547 6075.8 101.26 258623 4310.4 71.84

91.98 70 365917 6098.6 101.64

73 366032 6100.5

88.78 74 366065 6101.1

365957 6099.3 101.65 119229 1987.1 33.12 365995 6099.9 101.66 113171 1886.2 31.44 101.67 107079 1784.6 101.68 100954 1682.6 87.91 75 366097 6101.6 101.69 94798 1580.0

29.74 28.04 26.33

87.02 76 366128 6102.1 101.71
77 366157 6102.6 101.71
366184 6103.1 101.72
366208 6103.5 101.72
366230 6103.8 101.73

88613 1476.9 24.61 82400 1373.3 22.89 76162 1269.4 21.16 69900 1165.0 19.42 63616 1060.3 17.67

82.15 81 366250 6104.2 101-73
81.10
80.03

366268 6104.5 101-74

366298 6105.0 101.75

366284 6104-7 101.74 44646 744.1
38293 638.2

12:40

10.64

366309 6105.1 101.75 31929 532.1

8.87

NOTE.-The degrees of latitude are calculated for the latitudes of their middle points.

45

vii

TABLE D.

For Converting Chains and Links into Feet and Decimals of Feet.

146 211 277 343 409 475 541 607
147 212 278 344 410 476 542 608

147 213 279 345 411 477 543 609
148 213 279 345 411 477 543 609|
82149 214 280 346

•26

.92

•58

•24

06.

*56

.22

88.

54