GANNETT.] 
GEOGRAPHIC TABLES AND FORMULAS. 
7\) 
Table 9. — Areas of quadrilaterals of earth's surface of 30 f extent in latitude and longi- 
tude — Continued . 
[From Smithsonian Geographical Tables.] 
Middle latitude 
of quadrilat* 
eral. 
Area in square 
miles. 
Middle latitude 
of quadrilat- 
eral. 
Area in square 
miles. 
Middle latitude 
of quadrilat- 
eral. 
Area in square 
miles. 
o 
/ 
/ 
o 
/ 
66 
66 
66 
66 
00 
15 
30 
45 
488. 75 
483. 97 
479. 19 
474. 40 
74 00 
74 15 
74 30 
74 45 
331. 62 
326. 58 
321.53 
316. 48 
82 
82 
82 
82 
00 
15 
30 
45 
167. 57 
162. 37 
157. 16 
151.95 
67 
67 
67 
67 
00 
15 
30 
45 
469. 60 
464. 78 
450. 96 
455. 13 
75 00 
75 15 
75 30 
75 45 " 
311.42 
306. 36 
301. 28 
296. 21 
83 
83 
83 
83 
00 
15 
30 
45 
146. 74 
141.53 
136. 31 
131.09 
68 
68 
68 
68 
00 
15 
30 
45 
450. 29 
445. 45 
440. 59 
435. 72 
76 00 
76 15 
76 30 
76 45 
291. 12 
286. 04 
280. 94 
275. 84 
S4 
84 
84 
84 
00 
15 
30 
45 
125.87 
120. 64 
115. 42 
110. 18 
69 
69 
69 
69 
00 
15 
30 
45 
430. 84 
425. 96 
421. 06 
416. 16 
77 00 
77 15 
77 30 
77 45 
270. 73 
265. 62 
260. 50 
255. 38 
85 
85 
85 
85 
00 
15 
30 
45 
104. 95 
99. 72 
94.48 
89.25 
70 
70 
70 
7a 
00 
15 
30 
45 
411.25 
406. 34 
401. 41 
396. 47 
78 00 
78 15 
78 30 
78 45 
250. 25 
245. 12 
239. 98 
234. 83 
86 
86 
86 
86 
00 
15 
30 
45 
84.01 
78.76 
73.52 
68.27 
71 
71 
71 
71 
00 
15 
30 
45 
391. 53 
386. 58 
381. 62 
376. 65 
79 00 
79 15 
79 30 
79 45 
229. 68 
224. 53 
219. 37 
214. 21 
87 
87 
87 
87 
00 
15 
30 
45 
63. 03 
57.78 
52. 53 
47.28 
72 
72 
72 
72 
00 
15 
30 
45 
371. 68 
366. 70 
361. 71 
356. 71 
80 00 
80 15 
80 30 
80 45 
209. 05 
203. 88 
198. 70 
193. 52 
88 
88 
88 
88 
00 
15 
30 
45 
42. 03 
36.78 
31. 53 
26.27 
73 
73 
73 
73 
00 
15 
30 
45 
351. 71 
346. 69 
341. 68 
336. 65 
81 00 
81 15 
81 30 
81 45 
188. 34 
183. 15 
177. 96 
172. 77 
89 
89 
89 
89 
00 
15 
30 
45 
21.02 
15. 76 
10.51 
5.26 
