Birge—Work of Wind in Warming a Lake . 
357 
TABLE 6. 
Computation of the curve of distributed work for Lake Mendota by 
five-meter intervals. 
Depth 
A 
B 
C 
D 
E 
F 
Depth 
G 
H 
0-5 
00.0 
250.48 
314.16 
481.29 
250.48 
731.77 
0 
1210.22 
182.40 
5-10 
66.7 
471.20 
106.34 
167.13 
157.08 
324.21 
5 
478.45 
101.00 
10-15 
40.0 
265.86 
50.91 
60.79 
53.17 
113.96 
10 
154.24 
45.40 
15-20 
28.6 
177.92 
9.88 
9.88 
25.46 
35.34 
15 
40.28 
17.90 
20-24 
29.2 
44.46 
4.94 
4.94 
20 
4.94 
2.90 
24 
00 
0.00 
1209.92 
1210.22 
The explanation for this table is the same as for table 5. 
12. COMPARISON OF SIMILAR STRATA IN DIFFERENT LAKES 
It is often desirable to compare cases of similar strata in 
different lakes. An illustration may be taken from lake 
Geneva and Green lake. The following table shows the close 
resemblance of the two lakes: 
TABLE 7. 
Geneva 
Green 
Length, km.. 
12.1 
11.9 
Breadth, km.. 
3.2 
3.2 
Area, sq. km.. 
22.1 
29.7 
Depth, max., m.. 
49.3 
72.2 
Depth, mean, m. 
19.7 
33.1 
The depth is the only feature in which the lakes are not 
substantially identical. The resemblance is even closer than 
the table indicates, as may be seen by reference to the hy¬ 
drographic maps. (Juday T4, pi. XVII, XXV). It extends 
to orientation, form, shape of basin, position of deep water; 
and even to the presence, position and size of a bay on the 
north side of each lake. 
The essential facts of heat and work for August, 1913, are 
shown in the following table: 
