A UMNOLOGICAI. STUDY OP THE FINGPR LAKES. 
609 
TRANSPARENCY. 
The transparency of the water was determined in 1910 by means of a Secchi’s disk about 10 centi- 
meters in diameter. The depth at which this disk disappeared from view was as follows: 
Tabce XX. — Transparency of Water. 
Lakes. 
Trans- 
parency, 
Lakes. 
Trans- 
parency. 
Meters . 
Meters . 
8-3 
10.3 
6-3 
OXYGEN ABSORPTION. 
Table XXI. — Number of Cubic Centimeters of Oxygen Absorbed by i Liter of Distilled 
Water at Diffreent Temperatures from a Free Dry Atmosphere of 760 mm. Pressure. 
Temp. 
0 
I 
3 
4 
5 
6 
7 
8 
9 
— 2 
10. 8S0 
10. 850 
10. 820 
10. 790 
10. 760 
10. 730 
10. 700 
10. 670 
10. 640 
10. 610 
— r 
10. 580 
10. 551 
10. 522 
10. 493 
10. 464 
10.435 
10. 406 
10-377 
10. 348 
10.319 
0 
10. 290 
10. 263 
10. 236 
10. 209 
10. 182 
10. 155 
10. 128 
10. lOI 
10. 074 
10. 047 
I 
10. 020 
9-993 
9. 966 
9-939 
9.912 
9. 885 
9-858 
9.831 
9. 804 
9 - 777 
2 
9 - 750 
9 - 72s 
9. 700 
9-675 
9.630 
9.62s 
9. 600 
9 - 575 
9-550 
9 - 52s 
3 
9 - soo 
9.476 
9-452 
9.428 
9.404 
9-380 
9-356 
9-332 
9- 308 
9. 284 
4 
9. 260 
9 - 237 
9-214 
9 - 191 
9. 168 
9 - 145 
9. 122 
9.099 
9. 076 
9-053 
S 
9-030 
9.008 
8.986 
8.964 
8.942 
8. 920 
8.898 
8.876 
8. 8 s 4 
8.832 
6 
8. 810 
8. 789 
8. 768 
8. 747 
8. 726 
8. 70s 
8.684 
8. 663 
8. 642 
8. 621 
7 
8. 600 
8. 580 
8. 560 
8. 540 
8. 520 
8. 500 
8. 480 
8. 460 
8. 440 
8. 420 
8 
8. 400 
8.381 
8.362 
8-343 
8.324 
8.303 
8. 286 
8. 267 
8. 248 
8. 229 
9 
8. 210 
8. 191 
8. 172 
8- IS 3 
8. 134 
8. IIS 
8.096 
8. 077 
8.058 
8.039 
10 
8.020 
8. 002 
7-984 
7. 966 
7.948 
7-930 
7.912 
7.894 
7- 876 
7-859 
II 
7.840 
7. 824 
7- 808 
7 - 792 
7.776 
7- 760 
7 - 744 
7- 728 
7- 712 
7. 696 
12 
7. 680 
7. 664 
7-648 
7-632 
7. 616 
7. 600 
7- 584 
7- 568 
7 - 542 
7- 526 
13 
7-520 
7 - 505 
7. 490 
7-475 
7.460 
7-445 
7-430 
7-415 
7.400 
7-385 
14 
7-370 
7-355 
7-340 
7-325 
7-310 
7 - 295 
7. 280 
7 - 26s 
7.250 
7 - 235 
15 
7. 220 
7. 206 
7. 192 
7- 178 
7- 164 
7- 150 
7- 136 
7. 122 
7. 108 
7.094 
16 
7. 080 
7- 066 
7.052 
7.038 
7-024 
7. 010 
6. 996 
6. 982 
6. 968 
6. 954 
17 
6. 940 
6. 927 
6.914 
6. 901 
6. 888 
6. 875 
6. 862 
6. 849 
6.836 
6. 823 
18 
6. 810 
6. 798 
6. 786 
6. 774 
6. 762 
6- 750 
6. 738 
6. 726 
6. 714 
6. 702 
19 
6. 690 
6. 67S 
6.666 
6.654 
6. 642 
6. 630 
6. 618 
6. 606 
6- 594 
6. 582 
20 
6.370 
6-559 
6. 548 
6-537 
6. 526 
6- SIS 
6. 504 
6.493 
6. 4S2 
6.471 
21 
6. 460 
6-449 
6.438 
6. 427 
6. 416 
6.40s 
6.394 
6.383 
6.372 
6.361 
22 
6.350 
6-339 
6.328 
6-317 
6.306 
6. 295 
6. 284 
6.273 
6. 262 
6. 2SI 
23 
6. 240 
6. 230 
6. 220 
6. 210 
6. 200 
6. 190 
6. 180 
6. 170 
6. 160 
6. 150 
24 
6. 140 
6. 130 
6. 120 
6. no 
6. 100 
6. 090 
6. 080 
6. 070 
6.060 
6.050 
25 
6. 040 
6.030 
6. 020 
6. 010 
6. 000 
5-990 
5.980 
5-970 
5.960 
5-950 
26 
5-940 
5-930 
5- 920 
5.910 
5-900 
5.890 
5.880 
5- 870 
5.860 
5.850 
27 
5-840 
5 - 831 
5- 822 
S-813 
5-804 
5 - 795 
5. 786 
5 - 777 
5- 768 
5 - 759 
28 
5-750 
5 - 741 
5 - 732 
5 - 723 
5 - 714 
5 - 705 
5-696 
5.687 
5-678 
5.669 
29 
5. 660 
5-651 
5-542 
s-633 
5.624 
5-615 
5.606 
5 - 597 
5- 588 
5-579 
30 
5-570 
5- S6i 
5-552 
5 - 543 
5 - 534 
5-525 
5-516 
5- 507 
5-498 
5-489 
