AP JIA, 183 Jey 1B; 
ORGANISMS PER CuBic METER IN PLANKTON OF ILLINOIS RIVER IN 
338 
I—continued. 
(An asterisk at head of column indicates that all entries in it are based on 
filter-paper collections.) 
1898 
n n” me 
= g z 
a _ : H 
8 = 3s “ BS & 
1898 & = a8 aon a wis |i eel eae 
_8 is aS Ro SSS as a8 R28 
gS Se 33 ss Se 7) Sn) eS ees 
60 5 S38 S35 aS Ss || S85 Xs. 
a 'S) iS S S S S S 
Tans pee 600 0) 0) 160 0) 0 0 0 
CO eM a: 940 40 0 160 0) 0 0 40 
STDS eo MER 4,326 ih 0) 308 0) 0) ) 308 
Rebs (Sseneos 192 0) 0) 48 0 0 0 0) 
Ak Satu yd 320 ) 0) 160 0 0) 0 0 
Lie Ail 1,120 0) 0 80 0 0 80 0 
Te ae tt 3,285 0) 0 0) 0) ) 0) 0 
Mare aedien ari. 644 0) 0 0) 0 0 0 0) 
De PROS a: 2,960 40 0 120 0) 0 0) 0 
I ae 12,280 40 0 400 0) 0) 80 120 
SED Dire ye 18,320 200 0 80 0) ) 0) 80 
COE Yo) eae es 21,660 100 20 60 ) 0 20 0 
I Neorese Steven a 34,000 200 20 40 0) 0 0) 0 
TDs on Re 27,420 1,120 0) 0 ) 0 0 40 
SO) ees 33,600 0) 200 200 0 0 0 500 
SD Oh ats 54,080 0) 1,600} 2,880 0 0 0 4,160 
WE Ssnsose 202,000 400 0} 8,000 400 0 ) 1,200 
toes fA eee 229,400 0) 600| 5,200 0 0 600 2,200 
fy ee eae 172,200 300 200 600 0 0 0) 3,300 
Sea an 142,600 80 920 320 0 0} 1,080 1,640 
set Soe eater ct 110,880 0 200 0 80 0) 400 640 
ausater ihe oA oe 301,200 0) 400 ) 0 0} 2,600 4,000 
SS Nn ee. 181,800 0 200 0 200 ) 800 4,400 
SSO TEE a da 80,600 0 0 0 0 0) 0) 400 
SUD Biss: 35,100 0 0 0 0 0) 0 200 
Treas Se seeke 3,840 0 0) 0 0) 0) 1) 120 
PUP cate oh 1,200 0 ) 0 0 ) ) 180 
Co Sie ek 12,800 0 0) 0 40 0 40 240 
BS Geeta eae 13,040 0 0 0 120 0 120 300 
ING eple Beet Bee 11,600 0) 0 ) 0) 0) On 40 
ea Oh: Cheats 3,040 0 0 0 80 0 0 160 
Son RG oes: 2,380 0 0 0 0) 0 0) 180 
CY he NS ae 15,340 0 0) 0 120 0) 0 660 
cia 13 Orta 23,040 0 ty) 0) 440 0 0 480 
Sept x6netace 8,360 0 40 0 10) 0 ) 0 
Ete 1 3) Apes 20,800 0 0) 0 120 0 0 240 
a OS st 20,320 0 0) 0 120 0 60 360 
ESO Renae 98,200 100 700 0 300 0 200 700 
Oct. (aes 32,560 0 120 0) 320 0) 200 400 
seals Berens aes 32,060 | 0 200 0 80 0 0) 120 
STB, ree 23,520 0) 280 0) 0) 0) 40 40 
SS Cee 25,000 | 0 60 0 60 ) 120 240 
News too oscc 8,480 0) 120 0 0 0 0 60 
CORT AG Des a 15,080 0) 0 0) 0) 0 0 120 
SERS es 13,000 200 0 200 0 0 0 0 
Cte OD ate ie 10,880 480 0 80 0 0) 0 160 
GE TORS a 6, 100 | 80 0! 4 0 0) 0) 0 
Dees, 46a sce 9,480 | 20 0) 0) 0 0) 20 0 
Bey! A saat ies 21,500 0 0) 40 ) 40 0 0 
ciate (ane 2,040 40 0) 160 0) 40 0) 0 
CE Oe reais 6,520 0) 0) 120 0) 40 0) 0) 
Average...... 40,609 78 113 373 49 2 124 539 
