TAB LE 
330 
I—continued. 
ORGANISMS PER CuBICc 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.) 
Polyarthra 
platyptera 
1898 Winter eggs 
Free | Carried 
ieteis lel os (0) 0 
ge 100 0 
Se See aa 0 0 
Beto sets ote cer 0 0 
oe ee ae 0 0 
Somat State, citer 800 0 
ME DD ewe ote 0 0 
Wetre Sr citesce: 0 0) 
Sg OS pe ee 0 0 
2 pent prone 200 0) 
2 See (0) 0 
Se OO Gee 200 0 
Ney Ge 100 100 
OAS ee (0) 100 
LOD Aan ier 1,600 ) 
SOC PATS raster 22,400 0 
Mayen Sicye .e. 51,200 0 
Pee: 11,200 0) 
pea eb 2/400 ) 
So ae 400 0) 
marr ileare pe ee 400 0 
INE is ae. 0 (0) 
Grae lene oe, 800 0 
pe See 800 0) 
SADR eo. 2 800 10) 
UiGike WS\5 Greist 400 0 
Zo a2 eee 400 (0) 
ee Oe a 800 0 
erate Olers o c.a- 0 (0) 
AMIE Dae eine 0 (6) 
ee Oe eae 800 10} 
Pome ORs sae 0 0 
inl Orouey eye's 0 (0) 
Somme O) enc rey at 800 0 
Depts (Ore ss. nc. : 0 0 
OO it he ee ener 1,000 0 
ee ere. | 1,000 0 
oe ee | 1,600) 1,600 
Oates (hohe. 1,000 (0) 
Aa Sul eae 0 0 
See ie cists 0 (0) 
TA eee (0) 0 
Nove: W...:2 500 (0) 
Nt es re nee 1,000 0 
BMPS Pe hoe 1,000 0) 
DD aes 0 0 
22) YASIR iat 0 0 
Dees 16% 5.22 (0) 0) 
genni Sere cree 0 (0) 
ie 20S te 0) (0) 
Se DT ore, as sets 0 (0) 
Average...... 1,994 34 
2 ‘ 
3 : = 0 
SS 8 aS 3s 38 o 2g 
Se ss | 3 8s | Bs Bs Hos 
823 SS | Se | 88 <s S35 aes 
a8 0 os Se CS So oz eas 
saa ise | ee | Ss | SS s2 SEQ 
& Q « Y) Yy Y & 
2,200 10) 0 0 0 220 100 
1,000 (0) 100 0 (0) 300 0 
8,127 0 0 0 0 4,257 0) 
1,700 0 0 0 72 1,000 0 
2,800 0 0 0) 0) 1,200 0 
3,200 0 400 0 (6) 800 1,200 
6,318 0 10) 0 632 0 0 
3,200 (0) 10) 0 0 6,400 (0) 
4,000 0 10) 0 10) 4,800 (0) 
17,800 0 40 (0) 0 15,200 160 
26,400 10) 400 0) 10) 58,000 0 
11,400 0 100 0 0 A7 ,000 0 
10,400 0 300 0 0 21,000 0 
8,700 0 200 0 0 11,500 0 
104,200 10) 10) (0) 400 368,000 0 
502 ,400 0 0 0 1,600 954,400 6,400 
316,800 (0) 10) (0) 0 1,139,000 9,600 
72,000 0} 3,200 0 0 233,600 6,400 
120,000 0 0 0 800 206 ,400 800 
28,800 200 10) 0 200 60,480 (0) 
10,600 40 200 0 600 61,600 10) 
96,000 | 1,600 0 0 3,200 48 ,000 0 
119,200 0 0 0 800 19 ,200 800 
154,400 0 0 0} 112,000 795,200 3,200 
16,000 100 0 0 0 22,400 0 
7,200 (0) 40 0 800 22,800 400 
13,600 0 400 0 400 9,600 800 
24,000 0 (0) 0| 20,800 64,800 0 
53,600 10) 0 0 400 8,000 0 
295,200 0 800 800} 12,000 170,400 0 
84,800 0 400 0 4,800 52,000 800 
108 ,000 (0) 800 0 1,600 18,400 60 
63,200 10) 800 10) 3,200 24,800 0 
47,200 0| 1,600 800 800 1,600 (0) 
8,800 0 0 800 10) 10) (0) 
20,000 10) (0) 0 1,000 14,000 500 
103 ,000 10) 0 0 4,500 27,000 | 500 
86,400 0 10) 0} 30,400 265 ,600 100 
15,000 0} 1,000 0 500 5,000 0 
5,500 10) 0 0 0 27,000 0 
14,000 10) 0 0 500 77,000 0 
17,000 0 0 0 0 824,500 0 
4,500 0 0 0 0 110,500 0 
2,000 10) 0 0 0 97,000 60 
2,000 0 0 0 0 110,000 0 
6,000 10) 10) 10) 0 38,000 10) 
3,000 10) 10) 0 500 39,000 0 
9,160 0 10) 0 20 42 ,500 0 
29,300 0 0 0 2,500 555,720 0 
52,000 10) 0 0 0 59,200 (0) 
11,000 0 0 0 400 17,640 0 
52,560 a7 207 46 3,950 120,391 611 
