SA 
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 3 8 
=: S is} 7) ee) th 
1898 as 8 Ss 3 Sy aS SES 
Suk 5 & 38 ae ASS 8s 
S83 3s &§ ¥§ 28 EIS 
g a g g g iy ~ 
Miartivg Wlice 1s 5.72 0 0 0 0 0 0. 
oS Tae ee 0 0 0 0 100 0 
ene er ante * 0 0 0 0 0 (6) 
OGIO. eG eenne 0 0 0 0 0 0 
A Site aaers 0 0 0 0 0 0 
So eerie’ 0 0 0 0 0 (6) 
eID ED Is toe 0 0 0 0 0 0 
Mar i eeeeeO nee 0 0 0 0 0 0 
ie Oiercracaunts 0 0 0 0 (0) 0 
MISS a eeee 0 3,600 0 40,000 0 40,000 
SOOO kh 0 800 0 0 0 0 
pene) ene 2. 0 2,600 0 0 (0) 0 
Apr AIS eae 0 2,800 0 0 0 0 
a ee ee 0 1,800 100 0 (0) 0 
im LO eae 9,960 36,000 0 0 100 0 
eed Gite pondect 1,830,400 240,000 800 0 0 0 
IMaryee Sag «sac 4,883,200 240,000 0 0 3,200 0 
ede Om ee 24,608 , 000 48 ,800 0 0 0 0 
vam Listas Scho 28,800 32,800 0 90,000 10) 180,000 
pee POA esha 0 1,000 0 0 10) (6) 
OT liege Re 0 400 0 0 0 0 
ALIMVEF G7iscuas sn (0) 9,600 0 0 0 0 
Seam PAYS oie 5 10) 60,000 0 900,000 1,600 0 
Os 2 ieee ae te (0) 30,400 0 0 2,400 10) 
SD Sie trses 0 4,000 0 0 0 1,800,000 
spel Ske sets 0 B 400 400 0 800 (9) 
hoe ee ae 0 800 400 0 1,200 0 
SAE LO) ere 0| & 7,600 0 0 400 3,600,000 
es eA2O2 es ee 0 4,000 0 18) 2,400 3,600,000 
EN eES VEE es 0 8,000 800 120,000 3,200 1,800,000 
os re etcts 0 400 800 (0) 1,200 3,600,000 
pa lOmin Ac 0 800 800 120,000 10) 3,600,000 
er DO ts 0 3,200 1,600 0 6,400 120,000 
or le eau rea 0 2,400 800 0 3,200 4,500,000 
WED tH IG <cayo. 0 40 1,600 900 , 000 10,400 5,400,000 
OF LS tgReeRer en (0) 500 0 0 1,500 3,600,000 
Le (RS 0 2,000 1,500 0 1,000 1,800,000 
CoS 7 ere meee 0 1,600 6,400 1,800,000 9,600 9,000,000 
OctweeAsay ss. 0 0 1,500 3,600,000 1,000 2,700,000 
pea UL fo oho 0 0 1,000 1,800,000 500 1,800,000 
eee ALBIS oh cece 0 0 10) 0 0 900,000 
eh) i Olenscarenh (0) 0 0 0 0 0 
INOwed illic pees: 0 0 0 (0) 0 0 
Se ee a 0 0 0 1,800,000 0 0 
pera LS Sorte peice 0 0 1,000 0 0 1,800,000 
COP ene 0 0 0 0 0 0 
men 2 Oe tae 0 0 0 0 0 120,000 
DECK i6n,ao25.,: 0 0 0 0 0 0 
TEL Se eee 0 500 0 0 0 0 
meee Ol any cui 22,000 0 0 10) 0 0 
ITM fore ea 0 0 (0) 0 0 0 
Average...... 603,911 14,362 375 214,807 963 | 960,769 





