o>) 
318 
TABLE I—continued. 
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.) 




: 3 
RS SBS 
1898 RS aS Ss ae SS g 
Se ae es So aS Re 
SES S&e S8 8 Ss 58 
= = = z YH % 
ais eter. 0 0 0 0 0 14,400 
See Dham 1,000! 24,000,000 2,200 3,000,000 900 800 
eS eee 9,090 0 49 ,536 0 3,870 42,183 
Io Soacccc 2,204 0 3,180 5,400,000 300 5,400 
as ee eee 3,200 120,000 6,000 3,600,000 880 1,200 
SS BSS) ers aa 2,800, 14,400,000 48 ,000 0 4,000 400 
SGD Bea sewate nc 0 0 120,042 0 6,318 3,159 
Micire Sam Leis orci 0 7,200,000 0 90,000 400 400 
“ Severance 0 3,600,000 0 1,800,000 800 400 
SLO eee 8,640 8,100,000 5,200 900,000 800 2,800 
ee AS eet Oe 60,800 10,800,000 800 1,800,000 0 14,000 
29% eae c 30,240 2,700,000 1,000 900,000 400 8,600 
IN aa Sts ONS c 1,620 900,000 1,800 4,500,000 0 1,400 
ge, PLDs. castes 3,960 1,620,000 0 4,500,000 300 2,100 
Spe LOR Ean cate 2,800 7,200,000 3,600 3,600,000 800 6,800 
See eZOrtiesendcc 595,840 0 72,960 | 1,800,000 800 614,400 
Wikia. Suse as 230,400 9,000,000 552,960 6,000,000 6,200|} 2,016,000 
Se mOn fas 3,421,440 0 3,164,160| 21,600,000 1,600} 9,043,200 
apa tilly ee earner 259,200 0 1,241,200 64,800,000 0 3,801,600 
DANE hn 109,040) 10,800,000 126,720 9,000,000 200 86,400 
cages) Gee 293,360 1,008 ,000 101,760 5,400,000 40 14,400 
Pune Vos Ae. 26,028,800, 103,320,000 998 , 400 | 1,800,000 0 28,800 
BU nenvavc 0} 128,560,000 488 ,320 3,600,000 800 57,600 
PE a ene s 32,114,880) 232,200,000 470,400) 14,400,000 1,600 127,200 
Se RD Oh ner, ve tae S320 44,100,000 72,960 2,700,000 800 20,800 
uly U5 te 3,628,800 70,200,000 | 34,560 7,200,000 1,600 3,200 
feos Foe tae 1,811,520} 41,040,000 86,400 2,700,000 1,600 3,600 
SOs Rad ae 947,520) 115,200,000 5,600 54,000,000 1,600 1,600 
EMD 6 ogee 133,920) 20,200,000 1,000 3,600,000 800 400 
[are Daa coe 316,240} 50,400,000 | 12,800} 12,600,000 6,400 4,000 
* Oe eke 1,484,000 27,720,000 | 800 10,800,000 2,000 800 
LommtOnea ne 1,250,656 0 6,400 7,200,000 1,600 800 
ORC feet ed 366,400) 50,475,000 12,800 7,200,000 3,200 2,400 
ieee (Sate ete 5,028,800} 104,490,000 0 3,600,000 0 6,400 
Sep iain 1,122,000} 56,250,000 0 5,400,000 0 800 
Soa iene aera 1,200,000 64,800,000 7,000 16,200,000 500 1,500 
a) eae 2,227,000} 33,480,000 30,000 1,800,000 500 5,000 
ays) (rare ae 5,499,840) 146,520,000 94,080 9,000,000 4,800 17,600 
Octane 805,800) 40,500,000 18,900 9,900,000 0 2,000 
wr)» ee cen 840,000 37,800,000 ; 55,350 0 0 3,500 
ey ee 436,650) 27,360,000 348,000| 12,600,000 0 8,000 
So PDO te, heres 736,000 56,700,000 214,500 5,400,000 1,000 2,000 
Novae eens 83,200 3,600,000 70,550} 12,600,000 0 12,500 
e Be ae 98,700 10,800,000 25120) 19,800,000 0 19,000 
oe MSee ee 7,000 22,680,000 57,400 21,600,000 3,000 6,000 
LORD OSS me 60,000] 194,400,000 0! 23,400,000 0 4,000 
ADO eee mae 2,000 13,500,000 9,500 18,000,000 0 3,500 
DH Ba5denc 0 5,400,000 0 6,300,000 0 1,500 
Sept eerie 0 0 0 6,300,000 0 2,600 
ee) eran 0 4,500,000 0 4,500,000 0 4,400 
ee Dt arava 0 0 0 2,700,000 0 1,600 
Average...... 1,181,125] 34,762,365 148 ,626 8,569,038 1,612 308 ,330 







