40 
IOWA ACADEMY OP SCIENCE 
Vol. XXIY, 1917 
LAKE TEMPERATURES, JULY 18, 1916. 
Meters 
Feet 
l 
2 
3 
F.° 
c .° 
F.° 
c .° 
F.° 
o .° 
0 
0 
77.4 
25.3 
75.6 
24.2 
78,3 
25 7 
1 
3.3 
77.4 
25.3 
75.6 
24.2 
77.2 
25.1 
2 
6.6 
77.0 
25.0 
75.6 
24.2 
75.6 
24.2 
3 
9.8 
76.5 
24.7 
75.6 
24.2 
74.3 
23.5 
4 
13,1 
76.1 
24.5 
75.2 
24.0 
73.2 
22.9 
5 
16.4 
75.2 
24 . 0 ' 
74.5 
23.6 
71.2 
21.8 
6 
19.7 
74.7 
23.7 
74.1 
23.4 
59.9 
15.5 
7 
23.0 
71.4 
21.9 
64.9 
18.3 
60.8 
16.0 
8 
26.3 
68.4 
20.2 
63.9 
17.7 
9 
29.5 
68.4 
20.2 
63,3 
17.4 
10 
32.8 
64.0 
17.8 
62.8 
17.1 
11 
36.1 
63.3 
17.4 
61.9 
16.6 
12 
39.4 
62.2 
16.8 
61.0 
16.1 
13 
42.7 
61.5 
16,4 
60.6 
15.9 
14 
45.9 
61.0 
16.1 
60.6 
15.9 
15 
49.2 
60.8 
16.0 
60.3 
15.7 
16 
52.5 
60.6 
15.9 
60.1 
15.6 
17 
55,8 
60.3 
15.7 
59.4 
15.2 
18 
59.1 
59.9 
15.5 
59.2 
15.1 
19 
62.3 
59.5 
15.3 
58.9 
14.9 
20 
65.6 
59.0 
15.0 
58.8 
14.9 
21 
68.9 
58.6 
14.8 
58.6 
14.8 
22 
72.2 
57.6 
14.2 
58.8 
14.9 
23 
75.5 
57.6 
14.2 
58.8 
14.9 
24 
78.7 
57.7 
14.3 
25 
82.0 
57.2 
14.0 
26 
85.3 
55.9 
13.3 
27 
88.6 
55.9 
13.3 
28 
91.9 
55.8 
13.2 
29 
95.1 
55.4 
13.0 
30 
98.4 
55.4 
13.0 
31 
101.7 
55.9 
13.3 
32 
105.0 
55.6 
13.1 
