330 
TABLE I—countinued. 
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.) 









3s 8 2 < = < 
1898 Se SRS 38 8.8.8 38 FSS ae 
ss ss Ss Sis as OES BSS os 
3. ree Cw Go MH otk aoe ox es 
aS SS S§ 258 ss Bas ces 
x se na) a a a mq" 
Jans le sce. 0 0 0 0 0 0 0 
Fo Nel A 100, 0 0 0 0 0 0 
Be I a ae on 0 387 0 387 0 0 
ley Soacace 0 0 0 0 0 0 0 
SPS ed 0 0 0 0 0 0 0 
Cos chews 0 0 0 0 0 0 0 
OO ea 0 0 0 0 0 0 0 
Mariam mee 80 0 0 0 0 0 0 
SS gs ee 0 0 0 0 0 0 0 
Sars eee | 0 0 0 0 0 0 0 
oe POGTS aan | 0 0 0 0 0 0 40 
eS EDO te sos | 0 0 0 0 0 0 0 
More Geetce 20 0 100 0 100 0 0 
coe aD ae tae 0 0 0 0 0 0 0 
KO) Sane 0) 0. 0 0 0 0 0 
CO Nien oo 2 0 _ 0} 0 0 0 0 0 
WER By o0008 16,000 0 0 0 0 0 0 
Oke ee 20,800 3,200 1,600 0 1,600 0 0 
eae eee 11,200} 14,400 0 800 800 800 0 
7) re 400 2,120 0 200 200 0 0 
Co eile 6 200 2,000 | 1,400 0 1,400 0 0 
| | L 
june eae. 200 O. 4,800 0 4,800 0 0 
CATE a are 0 0 4,000 0) 4,000 1,600 0 
Cie ee a 1,100 1,100 | 70,400 0 70,400 24,800 0 
COS GEN A 100 0 544,000 0 544,000 128,800 0 
Wiky Soosene 160. 0. 29,200 400 29,600 1,600 0 
co PAN toe 0 0 51,200 0 51,200 13,200 400 
SO een 280 0 300,800 34,800 335,600 72,800 0 
COM ieee meer 17,900 0 6,400 10,400 | 16,800 1,200 0 
INGE Doan nor 23,200 0) 10,400 93,600, * 103,200 12,000 0 
1 aOR RS ye: 80 0 229,200 64,800 292 ,600 105,600 400 
Oe ae sata g00 0 272,800 80,800 353,600 116,000 0 
$5) Or ee 4,000 0 77,600 138,400 216,000 42,400 0 
oe 3 Obes: 2,400 0 28,800 86,400 115,200 28,000 2,400 
Sept Ones 0 0 80,000 83,200 163,200 35,200 400 
SoBe ee 0 60 27,000 10,000 36,500 18,000 2,000 
CO WO), on ane 1,140 60 87,500 27,500 115,000 43,000 0 
ie Oy ana eee 6,400 0 409 ,600 84,800 494400 41,600 1,600 
cts WANs: 500 0 19,000 9,000 28 ,000 2,000 0 
aE like, eens 1,000 0 8,000 1,000 9,000 2,000 0 
<n Se 0 0 8,000 500 8,500 2,500 0 
BS Re ae 60 0 11,500 0 11,500 5,500 0 
Worms Wegesos 0 O. 1,000 0 1,000 0 0 
more peas: 0 0) 0 0 0 0 0 
EDS Use ve tee 0 0) 100 0 100 0 0 
7 ee 0 oO, 0 0 0 | 0 0 
7 Ok ae 0. 0 0 0 0O. 0 0 
ecw oss 0 oO 20 0 20 0 0 
oats Napa 0 0 0 0 0 0 0 
ae) OM ee 0 0 400 0 400 0 0 
ie PEA ere 0 0 0 0 0 0 0 
| 
Average...... 2,079 441 43,946 13,973 57,919 13,242 139 










