S25 
TABLE I—continued. 
ORGANISMS PER CuBiIc 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.) 
s ee g 
S ‘3 oe 3 38 3 
3 8 2 Eg Seah son Se ee 
Bao 8 oBe 3S 85 $s Ss Se | 8S | Ss 
3s 83 SE Bé BES eee <8 | es 
on are S 5 gs & 88 ss es as 
Mane We 35 st. 440,500 100 (0) (0) 0 (0) 0 0 
gh BON Ros byata:2 32,800 100 200 0 0) 100 0 0 
to) 2 a 66,338 387 387 387 i sakopl 20,898 WANA O35 
EDI Sis ene 122,900 (0) 0 0 0 1,300 0 0 
3 Siocaft te ees 4,880 0 10) (0) 0 3,200 0) 0 
Cae: COVE oeceaes 34,880 800 0 800 800 0 0 80 
SRR DET te ect 141,524 632 DSC IM EP 12,636 9,477 3,159 0) 0 
Wart wel snus: 11,200 400 0 400 400 400 10) 0 
Be aeieds.« 11,720 400 0 400 1,200 0 400 40 
a Ce eee 7,600 600 10) 0 400 0 6) (0) 
St OLS ee 4,800 400 10) 10) 0 10) 0 (0) 
PAS 61,400 400 0 200 0 0 0 (0) 
tore) Siete os 700 100 100 100 0 0 0 0 
ot WIDE mace 3,520 300 200 0 20 100 0 0 
aL Dy acs. 7,300 400 10) 0 0 400 400 0 
MO? OjcreeNe are 3 6,720 0 0 10} 0 0 0 0 
INE Sone ee 26,000 0 0 0) 400 0 0) (0) 
MAO ants 5 49 ,800 0 0 0 1,600 0 0 0 
page Lidrcnemars ec < 23,800 2,400 (0) 10) 800 0 (0) 0) 
ee ees 5 9,320 600 0 0 200 0 400 80. 
he acco Lena aaa 8,920 400 0 200 0 0 400 200 
MET Filan. 23,600 800 200 0 0 0 0} 3,200 
oo So ee 21,600 1,600 800 0 0 0 0 0 
Fle OZ te are. 21,600 1,600 800 0 0 0 800 0 
eae Sieve anes 37 ,000 800 (0) 10) 0) 0 800 100 
Mtltys 25 nce. 19,360 0 0 1,200 400 0 400 400 
“Si haan res 26,000 800 0 800 200 0/| 1,600] 1,200 
o> (UCR ae 28,800 0 800 400 400 0 400 10) 
amnesic: 4,800 400 400 0 0 0 400 | 0 
PNG Diodes ci 16,800 800 4,800 0 0) 1,600 0 0 
a Ore keces 7,280 0 1,600 0 400 1,600 40 40 
Ole aan 24,060 0 2,400 800 0 800 0 800 
“Oe PETS AS ea 36,800 800 5,600 0 0 800 0 0 
mare ONS forsioce te 23,200 800 5,600 Onis 0 1,600 0) (0) 
WED ta nO ciesc < 20,800- 800 800 800 @) 3,200 0} 1,600 
eM Sib sc: 28,000 500 500 0 0) 6,000 0} 1,000 
OD OUR eee 19,000 500 500 500 500 1,000} 1,500 500 
WAP 2idivsttes tas. os 59,200 1,600 1,600 0 (0) 8,000 0} 3,200 
cts Ahi css 912,580 0 40 0 40 500 500 0 
ta Sil le eee 9,000 0 1,000 0 0) 0 0 0) 
ee BEN. fs is 10,000 10) 0 0 500 2,000} 1,000 0) 
DS er oe. : 25,060 1,000 1,500 1,000 1,000 | 500 500 500 
INVoN ed a aes 32,060 500 1,000 1,000 2,000 | 500 0 500 
“3 Siete hai va 37,060 1,000 1,000 1,000 1,000 | 0 0| 1,000 
in 1 eee eee 42 ,000 1,000 0 5,000 4,000 0 0 0) 
LO 190,400 0 0) 2,000 4,000 6,000 0 | 10) 
Bae ORs oe 3,400 10) 0 0 500 500 0) 0 
WEG. | 1Gis 4 fxn: 121,000 0 0 0 0 1,000 0 | 0 
Be see e 600 0 (0) 0 0 600 0 0 
TEA Is. aoe 1,040 40 0 0 0 1,000 0) 0 
abn DY /S 3 = aes 220 0 0 0 0 (0) 0 0 
Average...... 55,364 465 1,098 570 604 1,284 198 | ahs) 
