TA BLE 
339 
I—continued. 
ORGANISMS PER CuBIC METER IN PLANKTON OF ILLINOIS RIVER IN 1908. 
(An asterisk at head of column indicates that all entries in it are based on 
filter-paper collections.) 
2 g 
=| 
re = 3 28 8 o 
a! 3 + 
1898 ree oe S.8 Ss 838 = 3 
38 23 Sec ck ee alr se se 
& oy > vy vn 
aa S| Sh : > ee 
§ 8 g aye Ea se = 
Rams cillicse te 120 240 40 0) ty) 0 0 
CSO GN nis 200 500 0) 0) 0| 4,700 0 
Cs TNE aa 770 2,709 0 0) 0 774 77 
Bebereo thes 72 72 0) 0 0) 24 100 
HED eee tee 80 80 0) 0 ) 80 0 
ea 5 ee 160 1010) 0) 0 0) 400 0 
C Vy eae 126 3,159 0 0) 0) 0) 126 
Mara Lixo... 4 . 640 ) 0 ) 0 4 
Penn G Sion 800 2,000 a) ) 0 400 0 
i ache en 220 11,200 40 40 0 600 0 
Cs Os bee 1,120 16,800 40 0) 0) 40 40 
Oh ek aoe 760 20,700 ) ) 0) 40 20 
ror, Sa ee css 1,420 32,300 20 0 0) 0 40 
Oo ip aes 1,100 25,100 60 0 0) 40 40 
RIOR ea 5,500 27.200 0 0 0) 100 100 
2 Day eee 24,320 20,800 0) 0) 0) 320 0 
May Sica. 19,600 182,400 0 0) 0 0 0 
EEOMIO ks nat 53,200 169 ,600 0 0) 0 0 200 
sel aaa 27,900 166,400 1) 0) 900| 4,800 200 
Ch» SAS Mey 12,160 126,400 0 0) 840 40 80 
ee Siem, 22 5,680 103,800 0 ) 160 40 80 
Name cis fcc - 23,800 270,400 0) 0 0 0 200 
Coit ea 11,400 164,800 0) 0 0) 200 0 
Ch oh ee aa 14,600 65,600 0 0 0) 0 0 
OR eet 4,500 30,400 0 0 ) 300 100 
ijulvaeeoe oes ss 1,320 2,400 ) 0) 0 0 40 
TOR ic 780 180 0 60 0 0 180 
SEL OME 5, 1,680 10,800 0) 60 0 0 80 
Co Diy ee 840 11,600 0 0) 0 0 0) 
Natio 1 ere 360 11,200 ) 0) 0) ) 40 
ro ONS oleae 400 2,400 0) 0) 0 0 0 
SORA Gia cats 600 1,600 0) 0) 0 60 60 
aa 3,360 11,200 0) a) 60 60 180 
CRIES (eae Be! 5,520 13,600 0) ) 0) 0 120 
Rept Guns oars + 240 8 ,000 0 0 0 40 160 
ae Sl ieeeerae 4,320 16,000 60 0 0) 120 180 
co Vee 0 19,000 0) 60 0 120 60 
SO VB [eae ca 0) 96,000 0 200 0 300 400 
Octe Au aon! 2,600 29 ,000 0 0 0 0 80 
eerie ait. 3,920 27,500 0 80 0) 40 40 
Signe. =e.» 5,580 17,500 40 40 ) 40 40 
CC TOT lace na 2,400 22,000 120 ty) 0 120 60 
Nove iitea.<o! 300 8,000 0 ty) 0 0 180 
aes e ee. <a 960 14,000 0 0 ) 120 120 
Sree 400 12,000 100 ) 0 100 100 
(ED eae 160 10,000 0 0) 0} 2,000 320 
me DOM ars 4 6,000 12 0 0 ) 120 
MeC!, (6.iihss: 440 9,000 0) 0 0) 500 0) 
Atauldi 3". Seay 1,060 30,300 60 ) 0 0) 0 
Soe Qe an 1,800 0) 0 20 0) 0 ) 
SD ieee ee 920 5,400 ) ) 0 20 0 
Average...... 4,780 36,707 11 | 10 39 318 
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