GEOGRAPHIC TABLES AND FORMULAS. 
81 
Table 10.— Areas of quadrilaterals of earth's surface of 15' extent in latitude and 
longitude — Continued . 
[From Smithsonian Geographical Tables.] 
Middle latitude 
Area in 
Middle latitude 
Area in 
Middle latitude 
Area in 
of quadrilateral. 
square miles. 
of quadrilateral. 
square miles. 
of quadrilateral. 
square miles. 
o 
/ 
// 

/ 
// 

f 
f/ 
16 
37 
30 
284. 92 
22 
07 
30 
275. 68 
27 
37 
30 
263. 93 
16 
45 
00 
284. 74 
22 
15 
00 
275. 44 
27 
45 
00 
263. 64 
16 
52 
30 
284. 56 
22 
22 
30 
275. 20 
27 
52 
30 
263. 34 
17 
00 
00 
284. 38 
22 
30 
00 
274. 96 
28 
00 
00 
263. 04 
17 
07 
30 
284. 19 
22 
37 
30 
274. 72 
28 
07 
30 
262. 74 
17 
15 
00 
284. 00 
22 
45 
00 
274. 47 
28 
15 
00 
262. 44 
17 
22 
30 
283. 81 
22 
52 
30 
274. 22 
28 
22 
30 
262. 14 
17 
30 
00 
283. 62 
23 
00 
00 
273. 98 
28 
30 
00 
261. 84 
17 
37 
30 
283. 43 
23 
07 
30 
273. 73 
28 
37 
30 
261. 53 
17 
45 
00 
283. 24 
23 
15 
00 
273. 48 
28 
45 
00 
261. 23 
17 
52 
30 
283. 05 
23 
22 
30 
273. 23 
28 
52 
30 
260. 92 
18 
00 
00 
282. 86 
23 
30 
00 
272. 98 
29 
00 
00 
260. 61 
18 
07 
30 
282. 66 
23 
37 
30 
272. 72 
29 
07 
30 
260. 30 
18 
15 
00 
282. 46 
23 
45 
00 
272. 47 
29 
15 
00 
259. 99 
18 
22 
30 
282. 26 
23 
52 
30 
272. 21 
29 
22 
30 
259. 68 
18 
30 
00 
282. 06 
24 
00 
00 
271. 95 
29 
30 
00 
259. 37 
18 
37 
30 
281. 86 
24 
07 
30 
371.69 
29 
37 
30 
259. 05 
18 
45 
00 
281. 66 
24 
15 
00 
271.44 
29 
45 
00 
258. 74 
18 
52 
30 
281. 45 
24 
22 
30 
271. 17 
29 
52 
30 
258. 42 
19 
00 
00 
281. 25 
24 
30 
00 
270. 91 
30 
00 
oo- 
258. 10 
19 
07 
30 
281. 04 
24 
37 
30 
270. 65 
30 
07 
30 
257. 78 
19 
15 
00 
280. 83 
24 
45 
00 
270. 38 
30 
15 
00 
257. 46 
19 
22 
30 
280. 62 
24 
52 
30 
270. 11 
30 
22 
30 
357. 14 
19 
30 
00 
280. 41 
25 
00 
00 
269. 85 
30 
30 
00 
256. 82 
19 
37 
30 
280. 20 
25 
07 
30 
269. 58 
30 
37 
30 
256. 49 
19 
45 
00 
279. 99 
25 
15 
00 
269. 31 
30 
45 
00 
256. 17 
19 
52 
30 
279. 77 
25 
22 
30 
269. 04 
30 
52 
30 
255. 84 
20 
00 
00 
279. 55 
25 
30 
00 
268. 76 
31 
00 
00 
255. 52 
20 
07 
30 
279. 34 
25 
37 
30 
268. 49 
31 
07 
30 
255. 19 
20 
15 
00 
279. 12 
25 
45 
00 
268. 21 
31 
15 
00 
254. 86 
20 
22 
30 
278. 90 
25 
52 
30 
267. 94 
31 
22 
30 
254. 53 
20 
30 
00 
278. 68 
26 
00 
00 
267. 66 
31 
30 
00 
254. 19 
20 
37 
30 
278. 46 
26 
07 
30 
267. 38 
31 
37 
30 
253. 86 
20 
45 
00 
278. 23 
26 
15 
00 
267. 10 
31 
45 
00 
253. 53 
20 
52 
30 
278. 00 
26 
22 
30 
266. 82 
31 
52 
30 
253. 19 
21 
00 
00 
277. 78 
26 
30 
00 
266. 54 
32 
00 
00 
252. 85 
21 
07 
30 
277. 55 
26 
37 
30 
266. 25 
32 
07 
30 
252. 51 
21 
15 
00 
277. 32 
26 
45 
00 
265. 97 
32 
15 
00 
252.17 
21 
22 
30 
277. 09 
26 
52 
30 
265. 68 
32 
22 
30 
251. 83 
21 
30 
00 
276. 86 
27 
00 
00 
265. 39 
32 
30 
00 
251. 49 
21 
37 
30 
276. 63 
27 
07 
30 
265. 10 
32 
37 
30 
251. 15 
21 
45 
00 
276. 39 
27 
15 
00 
264. 81 
32 
45 
00 
250. 80 
21 
52 
30 
276. 16 
27 
22 
30 
264. 52 
32 
52 
30 
250. 45 
22 
00 
00 
275. 92 
27 
30 
00 
264. 23 
33 
00 
00 
250. 11 
Bull. 214—03- 
