88 
GEOGRAPHIC TABLES AND FORMULAS. 
[BULL. 214. 
Table 11.— Areas of quadrilaterals of earth' s surf ace 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 / 
44 05 
95.45 
o / 
50 45 
84.21 
/ 
57 25 
71.78 
44 15 
95.19 
50 55 
83.91 
57 35 
71.46 
44 25 
94.92 
51 05 
83. 61 
57 45 
71.13 
44 35 
94.65 
51 15 
83.31 
57 55 
70.80 
« 44 45 
94. 38 
51 25 
83.01 
58 05 
70.48 
44 55 
94.11 
51 35 
82.71 
58 15 
70.15 
45 05 
93.84 
51 45 
82.41 
58 25 
69.82 
45 15 
93.58 
51 55 
82.11 
58 35 
69.49 
45 25 
93. 30 
52 05 
81.81 
58 45 
69.17 
45 35 
93. 03 
52 15 
81.51 
58 55 
68.84 
45 45 
92.76 
52 25 
81.20 
59 05 
68.51 
45 55 
92.48 
52 35 
80.90 
59 15 
68.18 
46 05 
92.21 
52 45 
80.60 
59 25 
67.84 
46 15 
91.94 
52 55 
80.29 
59 35 
67.51 
46 25 
91.66 
53 05 
79.98 
59 45 
67.18 
46 35 
91.38 
53 15 
79.68 
59 55 
66.85 
46 45 
91.10 
53 25 
79.37 
60 05 
66.51 
46 55 
90.82 
53 35 
79.06 
60 15 
66.18 
47 05 
90.55 
53 45 
78.75 
60 25 
65.84 
47 15 
90.27 
53 55 
78.44 
60 35 
65.51 
47 25 
89.99 
54 05 
78.13 
60 45 
65.17 
47 35 
89.70 
54 15 
77.82 
60 55 
64.84 
47 45 
89.42 
54 25 
77.51 
61 05 
64.50 
47 55 
89.14 
54 35 
77.19 
61 15 
64.16 
48 05 
88.85 
54 45 
76.88 
61 25 
63.82 
48 15 
88.57 
54 55 
76.57 
61 35 
63.48 
48 25 
88.28 
55 05 
76. 25 
61 45 
63.14 
48 35 
88.00 
55 15 
75.94 
61 55 
62.80 
48 45 
87.71 
55 25 
75.62 
62 05 
62.46 
48 55 
87.42 
55 35 
75.30 
62 15 
62.12 
49 05 
87.13 
55 45 
74.99 
62 25 
61.78 
49 15 
86.84 
55 55 
74.67 
62 35 
61.44 
49 25 
86.55 
56 05 
74.35 
62 45 
61.10 
49 35 
86.26 
56 15 
74.03 
62 55 
60.75 
49 45 
85.97 
56 25 
73. 71 
63 05 
60.41 
49 55 
85.68 
56 35 
73. 39 
63 15 
60.06 
50 05 
85.39 
56 45 
73. 07 
63 25 
59.72 
50 15 
85.09 
56 55 
72.75 
63 35 
59. 37 
50 25 
84.80 
57 05 
72.43 
63 45 
59.03 
50 35 
84.50 
57 15 
72.10 
63 55 
58.68 
