MICHIGAN ACADEMY OF SCIENCE. 
125 
Date. 
Depth, 
meters. 
Temperature, 
degrees C. 
Oxygen, 
cc. per liter. 
Per cent 
Saturation. 
July 13 
0 
22.2 
7.245 
120.1. 
3 
22 
6 . 93 
114.5. 
5 
20 
6.72 
110.1. 
10 
17.7 
4.67 
70.9. 
15 
12.5 
3.27 
44.4. 
18 
10 
.924 
.1189. 
15 
0 
22.3 
7.156 
121.09. 
3 
22 
6.9 
113.2. 
5 
19.7 
6.861 
108.6. 
10 
17 
4 . 526 
67.9. 
15 
13 
3.1 
42.5. 
18J 
10 
.843 
1.08. 
16 
0 
22 
6.91 
114.3. 
5 
19.6 
6.81 
107.6. 
10 
17.6 
4.44 
667.3. 
15 
12.5 
2.7 
36.7. 
19 
10 
0 
0.0. 
18 
0 
20 
7.341 
118.63. 
5 
19 
G . 6 
103.1 . 
10 
17.7 
4.662 
70.8. 
15 
12.2 
2.84 
38.2. 
19 
9.77 
.843 
1.08. 
19 
5 
19.2 
6.419 
100.8. 
10 
17.7 
4.62 
76.1. 
15 
12.1 
2.6 
• 35.09. 
24 
7 
18.8 
4.786 
74 . 75 . 
8 V 
18.8 
4.966 
77 . 24 . 
81 
18.8 
4 . 932 
76.72. 
10 
17. 
4 42 
15 
10.6 
1.9 
24.7. 
18 
10 
trace. 
29 
5 
19.5 
4.589 
10 
18.7 
4.321 
30 
0 
20.3 
5.77 
92.3. 
3 
20 
5 . 62 
89.1 . 
5 
19.7 
5.34 
84.5. 
10 
17. 
4.49 
60.1 . 
15 
11.1 
.6216 
8 . IS . 
17 
10 
.4715 
6.06. 
19 
9.77 
trace 
31 
0 
20 
5.54 
88.2. 
1 
20 
5 . 8207 
92.6. 
August 1 
0 
20.1 
5.7 
90.9. 
5 
19.4 
4.56. 
71.7. 
10 
18.8 
4.26 
60.6. 
15 
10.5 
.0026 
.37. 
13 
13.89 
1.89 
26.1 . 
19 
10 
trace 
0 . 0 . 
7 
0 
19.4 
5.94 
93.4. 
55 
18 
4 . 98 
76.1. 
8 
17.7 
4.23 
64.2. 
10 
17.3 
3.84 
57 . 8 . 
15 
10 
.0465 
. 59 . 
18 
10 
0.0 
0 . 0 . 
Bottom. 
19 
19 
10 
trace 
0 . 0 . 
20 
0 
19. S 
0.64 
105.3. 
3 
19.8 
6.47 
102.6. 
5 
17.6 
6.32 
97.4. 
15 
12.11 
181 
10 
0.0 
0 . 0 . 
22 
0 
19.9 
6 . 59 
104.9. 
5 
18.8 
6.128 
92.2. 
15 
12.2 
.4419 
5 . 9 . 
191 
9.77 
0.0 
0 . 0 . 
