DLA B LE 
340 
I—concluded. 
ORGANISMS PER CuBIC METER IN PLANKTON OF ILLINOIS RIVER IN 1898. 
(An asterisk at head of column indicates that all entries in it are based on 
filter-paper collections.) 













n co 
3 ms 8 
n fo) ~ 
3% & my & A fs) 
Se ss) a a. & 2 
1898 g | §3 5 = 8 at z 
='s See rAd — i a —=:0 =f 
as |>$s (282 GE REG ge as 
1) in ee) oS royste= oN eye 
a Q = sal = [= i= 
sjarice il gon.) caf: 0 0 20 1,220); 544,201,080 1,042,720 545,243,800 
Se Db cl apera s 2 0 80 40 7,720| 202,136,180 288,340 202,424,520 
So) DO ie emade ere | 0 0 154 7,738 | 180,295,247 195,484 180,490,731 
| 
Into. Se aheon 0 0 24 648 | 619,030,830 1,381,960 620,412,790 
ie Sites oeerecs 0 0 80 2,160} 297,341,760 651,200 279,992,960 
te US eae sere 07 0 | 0 6,000} 653,122,000 | 1,091,920 654,213,920 
fis 2 Dick nagrrere 0! 0 0 3,200), LIS eS 14812 715,697 116,230,509 
Maire ol rays a2: 0 800 160 1,124 21,790,800 1,809,688 23,600,488 
zs ciBeccroine 0 40 | 40 3,360 96,590,840 542 ,680 97,133,520 
pom LO) hagsgh ors 0| 40 40 3,280} 118,382,400 453,100 118,835,500 
BP DD eyes ee. | om 1,640 0 1,600 | 127,930,360 484,760 128,451,120 
Soe 2 OL eer merece! 0) 80 0 2,020 53,463 ,040 444 ,900 53,907 ,940 
ire tS eee 0 900 100 | 1,860} 42,470,860 | 363,980| 42,834,834 
at As it ae 0 220 20 980 90,934,320 | 1,432,400 102 ,366,720 
vipa ba US) aaren a an 0) 400 0) 3,100 | 927,956,220 2,134,800} 930,091,020 
bs S2O ns cee: (om 320 | 0 | 20,160 |3,872 ,537,280 16,092 ,840 | 3,848 ,630,120 
WERGS SSis enyaoo | 0 0 | 0 10,800 3,200,166,960} 898,919,800 | 4,099 ,086,760 
be BO wc ancn see 0 0 | 200 13,600 4,467,165,760) 42,826,200 | 4,509,991 ,960 
pe. WUT Ae oncgews Ad) | 100 | 0 | 213,900 2,148 ,960,400 31,091,900 | 2,180,052 ,300 
ie ee Aetna 0) 1,200 | 0 5,360} 190,671,160 4,969,580 195,640,740 
caer i WP leone 120 100 | 6) 4,720) 252,704,250 2,772,200 255,476,450 
Weta Sige eo 200 | 0) 0) 24,000 |} 259,129,000 9,695,000 268,824,000 
ee TAR Stes one | om 0 0 4,400 |1,149,333,480| 10,959,400 | 1,160,292 ,880 
ie POA cctesPratyss oes 300 | 0 | (0) 3,300} 641,056,900 15,159,600 656,216,500 
Pte 2 Or eae ais | 200 | 0} 300 10,900 | 612,686,240 7,796,700 620,482,940 
[Gill eee lecoe ae c 40 | 0 120 5,800 |} 257,668,840} 495,337,320 753,000,160 
ip WZ vores 120 | 60 120 5,320 | 223,936,060 4,135,160 228,071,220 
eS AG msg s,s 40. 80 | 0 2,680 |1,578,635,720 1,717,240 | 1,580,352 ,960 
fa 2 Olen ees = 0 60 0 1,440 | 281,604,120 907 ,240 282,511,360 
USS Dee Renstc.s 0 0) 0 | 3,440 | 369,169,240 5,833,440 375,002 ,680 
43 Oat ace 0 0 | 0) 840 |3,084,000,880 69,874,760 | 3,153,875 ,640 
Bel aes 0 0. 0 6,580 | 583,940,376 1/240,920| 585,181,296 
CRG te | 60} 0 0 8'420| 544/041,260 1'519'140| 545'560'400 
Oo Olerenens ps, 160 80 0 5,320 | 797,312,600 597 ,880 797,910,480 
SeEpty . Operas | (6) 0 0 4,320}; 488,146,040 60,463 ,480 548 ,609 ,520 
oe SRL SR oat 60 60 0 2,420! 676,773,060 | 1,712,720 678,485,780 
soe 2 One ete 180 0 (0) 5,920 | 330,837,120) 32,466,660 363,303,780 
See Se Ai enyene 6) 0 (0) 12,100} 511,099,300 3,201,200 514,300,500 
(0 Yel ena: See eer 40 40 0 | 2,740 | 264,225,400 | 2,035,720 266,261,120 
sates yi be eee 0 0 0 1,240} 126,398,510 1,495 ,880 127,894,390 
Sime Sinead: 0) 0 400. 1,140) 182,891,160 1,967,020 184,858,180 
spc OAS evar Seay ces 0 0 0 3,860 | 218,768,810 2,453,060 221,221,870 
Nowe | laa: 0} 120 60 4,360 | 209,418,675 1,189,380 210,608,055 
= Sree | 0 0 0 15,300 | 277,953,180 1,281,220 279,234,400 
ee Uy rae 0 0 100 7,500 | 407,573,600 732,300 408 ,305 ,900 
po DD emgrer Fe 400 0 0 25,680 | 466,411,780 1,109,040 467,520,820 
Sth 20 5 ate suet 0 80 240 1,900 | 364,032,900 799,980 364,832,880 
Decs 65 4. .2 = 0 0 180 680} 529,250,270 916,780 530,167,050 
PA QU Sere 0 500 60 1,560 |1,715,442.415 1,757,440 | 1,717,199,855 
PE ZO: ayciern 3 0 0 80 320} 848,243,820 682,440 848 ,926,260 
SOD Tames, 0 0 80 340 |} 387,414,000 548,700 387,926,700 
Average...-... 37 | 135 52 9,393 723,283,871) 34,226,468 756,548,801 






“—PTY . —_—- = 
