GANNETT.] 
GEOGRAPHIC TABLES AND FORMULAS. 
89 
Table 11. — Areas of quadrilaterals of earth's surface of 10' extent in latitude and 
longitude — Continued. 
[From Smithsonian Geographical Tables.] 
Middle lati- 
tude of 
quadrilateral. 
Area in square 
miles. 
Middle lati- 
tude of 
quadrilateral. 
Area in square 
miles. 
Middle lati- 
tude of 
quadrilateral. 
Area in square 
miles. 
o / 
64 05 
58.33 
o / 
70 45 
44.05 
/ 
77 25 
29.13 
64 15 
57.99 
70 55 
43. 69 
77 35 
28.76 
64 25 
57.64 
71 05 
43.32 
77 45 
28.37 
64 35 
57.29 
71 15 
42. 95 
77 55 
27.99 
64 45 
56.94 
71 25 
42.58 
78 05 
27.62 
64 55 
56.59 
71 35 
42.22 
78 15 
27.24 
65 05 
56. 24 
71 45 
41.85 
78 25 
26.85 
65 15 
55.89 
71 55 
41.48 
78 35 
26.47 
65 25 
55.54 
72 05 
41.11 
78 45 
26.09 
65 35 
55.19 
72 15 
40.74 
78 55 
25.71 
65 45 
54.83 
72 25 
40.37 
79 05 
25.33 
65 55 
54.48 
72 35 
40.00 
79 15 
24.95 
66 05 
54.13 
72 45 
39.63 
79 25 
24.57 
66 15 
53.78 
72 55 
39.26 
79 35 
24.18 
66 25 
53.42 
73 05 
38.89 
79 45 
23.80 
66 35 
53.06 
73 15 
38.52 
79 55 
23.42 
66 45 
52.71 
73 25 
38.15 
80 05 
23.04 
66 55 
52.35 
73 35 
37.78 
80 15 
22.65 
67 05 
52.00 
73 45 
37.41 
80 25 
22.27 
67 15 
51.64 
73 55 
37.03 
80 35 
21.89 
67 25 
51.28 
74 05 
36.66 
80 45 
21.50 
67 35 
50.93 
74 15 
36.29 
80 55 
21.12 
67 45 
50.57 
74 25 
35.91 
81 05 
20.73 
67 55 
50.21 
74 35 
35.54 
81 15 
20.35 
68 05 
49.85 
74 45 
35.17 
81 25 
19.97 
68 15 
49.49 
74 55 
34.79 
81 35 
19.58 
68 25 
49.13 
75 05 
34.42 
81 45 
19.20 
68 35 
48.77 
75 15 
34.04 
81 55 
18.81 
68 45 
48.41 
75 25 
33.66 
82 05 
18.43 
68 55 
48.05 
75 35 
33.29 
82 15 
18.04 
69 05 
47.69 
75 45 
32.91 
82 25 
17.65 
69 15 
47.33 
75 55 
32.53 
82 35 
17.27 
69 25 
46.97 
76 05 
32.16 
82 45 
16.88 
69 35 
46.60 
76 15 
31.78 
82 55 
16.50 
69 45 
46.24 
76 25 
31.40 
83 05 
16.11 
69 55 
45.88 
76 35 
31.03 
83 15 
15.73 
70 05 
45.51 
76 45 
' 30. 65 
83 25 
15.34 
70 15 
45.15 
76 55 
30.27 
83 35 
14.95 
70 25 
44.78 
77 05 
29.89 
83 45 
14.57 
70 35 
44.42 
77 15 
29.51 
83 55 
14.18 
