314 
AP NGS ID, 1B) 1k 
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.) 

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S sais 3 : 
ait = eats) 23 a 
#8 = Be ts ss = = 
SES os S = S 
1898 Ss 8 ss | $8 oa = g 
BS wet oS y bo a | ss& Stee 
Ee gs ae 88 ss Be ies 
293 oY} SS Se Ss 2 © 
Sey eae G Sb * S* ao 
| : 
acer ies aaes 399,600,000 7,477,200 0 0 7,200,000} 277,200| 14,400,200 
SOS ae, 105,000,000} 3,046,800 0 0} 3,000;000) 46,800 9,000,200 
Se eae ee 10,800,000) 14,511,837 0} 387. 14,400/000/ 111,456] 108,000,386 
Bebew a0 Sn. 575,000,000 5,440,000 0 0 5,400,000} 39,600 9,000, 500 
EO eB hres 275,400,000 400 O 0) 0 400 9,014,800 
tS See as. 602,200,000 14,800 0, 400) 0} 14,400 3,600,400 
Loner D pane ee 43,200,000 7,200,000 oO 0 0| 9,477 3,159 
Mar, Ton =: 0 0 om 0. 0 0 400 
oh eae a Peet 79,200,000 2,700,400 0 0| 2,700,000 400 3,600,400 
PFET woes 40,500,000} 9 }000,600 0 0 — 9;000}000 600| 22,502,800 
Ny Berka ae 21,600,000} 9,000,000 0 0 9}000;000 0 600 
COUT reat oy | 18;900,000} 6 ;300;200 0 0) 6,300,000 200 2,704,200 
pre. Ste. A 14,400,000 1,800,100 0 0) 1,800,000 100 2,700,300 
Ad 21,600,000)  2/701,100 07 0 2'700,000) 1,100 1,980,100 
mead OF manne | 21,600,000} 18/002/400 0| 0, 18,000;000) 2,400) 55,800,800 
Be ADOF aaa | 10,800,000} 190;835,200 0 0, 190;800;000) 35,200) 135,906,400 
Miiyin €3'ace 42,000,000} 174,000,000 O| 0 168,000,000, 19,200| 212,406,400 
Ee Wt On eae 7,200,000} 216/057,600 0. 0 216;,000;000| 57,600| 194,531,200 
cS SW pe saoee 14,400,000| 50;443;200 0 0} 50,400,000) 43,200} 64,901,200 
NEM an, Bee 7,200,000| 10;}800;000 0) 0} 9,000,000 0} 125,602,200 
mL ee ae 10,800,000} 14}400,000 200, 0} 43;200;000 200} 27,001,600 
tmiee eee 18,000,000} 21,600,000 0. 0| 14,400,000 0} 21,616,000 
a aes 18,000,000| 19)800;000 0 | 0, 3,600,000 0} 46,801,000 
MD thee TE: 43,200,000} 43/200,000 0 0} 18;000;000 0| 21,658,400 
a 38 auc 25,200,000} 18,000,000 0 0 18,000,000 0| 34,260,800 
. | | 
aly. See 50,400,000} 21,600,040 0. 0} 21,600,000 40 9,049,200 
SHO} ee 10,800,000| 28}800;060 0) 0, 28,800,000 60} 10,851,200 
RE NAON sce ees 43;200,000| 162;000,400| 400. 0 162}000;000 0| 277,340,400 
4 96 Eee 7,200,000} 34/200,000 0| 0| 34,200,000] 3,200] 31,651,600 
Auge 2 aaa 21,600,000} 81,003,200 oO 0, 79,200,000 0) 45,304,800 
ce MON Ae ae 57,600,000 |1,700,600, 000 oO 0 | 1,697,000 ;000 0| 370,948:400 
Cai gantoae: 21,600,000) '212;400,800 0, 800, 208,800,000 0| 68,468,800 
ie ee 25,200,000} 100/817,600| 1,600 2,400 100,800,000| 13,600] 108,200,000 
et 1) eee 14,400}000| 288/121,600| ‘800) ‘800, 288,000,000} 27,200) 189,334,400 
Séptlonmrnee 18,000,000] 118,800,800) 800. 0 111,600,000) 46,400) 87,489,600 
ai cpr ts 28,000,000 | 3785013,500 0. 0, 378,000;000) 13,500) 54,042,500 
NON Ae 50,400,000| 72/008;000 0 0} 723000;000) 8,000) 57,684,500 
CSIR ie ed 68,400,000} 111,614,400 0) 0} 108}000;000) 14,400} 70,526,400 
Oct eA ee 34,200,000) 23,400,000 0 0 14,400,000} 10,500) 27,024,000 
Se Aen 21,600,000} 28,803,500 0 0} 28/800;000} 3,500) 14,420,000 
ce Gat a 86,400,000} 3,600,500 0 0 3,600,000 500, 15,312,500 
C25) ee 1,800,000} 52,201,560 0 60, 52,200,000} 1,500} 28,833,000 
Nova= 125... 93,600,000} 21,601,000} 500) 0 21,600,000 500| 14,408,000 
ee eon ed 176,400,000} 10/800;000 O 0) 7,200,000 0 3,604,000 
ae Creer 190;800,000} 10}400,000 0 0, 10}400,000 0| 34,205,000 
Lp) ee 124) 400,000 7,200 ;000 0 0 7,200;000 0| 16,206,000 
BE Orr te 57,600,000 7,200,000 0 0 7,200,000 0 7,205,000 
Dees (6.005: 136,800,000} 14,400,000 0 0 14,400,000 0| 13,500,000 
SF Sean 468 ,000}000| 54,000,000 0 0, 54,000,000 0| 84,600,500 
DO as 640,800,000} 59,400,000 0 0 59}400,000 0} 58,500,000 
oa y epee 497,200| 37,800,000 0 0 37,800,000 0| 27,000,200 
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Average...... 55,428,792| 85,909,984 83 93/ 83,059,615| 15,431) 53,175,104 




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