TABLE I—continued. 
326 
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 8 3 5 8 s gs 
% = Ba ey Wes 
1898 28 38 35 8 $3 3 = ES 
= =e SS 38 8.8 3s Se RSS 
Ss ee Ba pe S38 Pe a, 2 8 
SM BO wk on SS 1S) Sin 3s 
g Q Q a < a x 1S) 
Jans iis 100 100 0 0 0 593,420 (0) 26,500 
me Pl ate iy ea 400 200 10) 0 0 197,100 10) 37,000 
oie CBD tee eee 9,675 (as) 0 0 0 190,017 |13,545| 45,666 
Bebe Sis eae 500 100 (0) 0 0 1,246,300) 1,600 54,700 
a Sie eeenene 800 80 (0) 0 0 629,680 800 |} 197,600 
eae ee Wayne mere as 9,200 2,000 0 0 10) 1,016,000 4,400) 164,800 
pore Dee een 0. 6,318 10) 632 0 0 518,954 50,544 
Mian e inlise es 4,000 800 400 0 0 Die HO) 400 46,400 
Ss Sire kee 2,800 800 40 0 0 492 ,920 800 54,800 
Cael Seep stat teaes 2,600 1,400 (0) 200 (0) 324,200 200 89 ,600 
te 2 ae eee 1,600 800 10) 2,000 (0) 267,800 400 22,000 
Pat OR PRP ae 200 0 10} 400 0 241,420 400 10,200 
pNic hae aN ee 100 0 0 500 0 241,440 0 3,100 
SD are A 2 1,000 800 0 100 (0) 1,342,500 300 2,400 
asp Vel Oran. 1,600 1,200 100 0 0 1,340,800 0 13,200 
ree Otte 3,200 0 (0) 3,200 (0) 7,710,400 10) 99,200 
WER? 856545 22,400 3,200 10) 0 0 17,404,800 10) 83,200 
Soe BLO ee at 30,400 (0) 3,200 0 0 18,260,800 (0) 6,400 
See ucetyaees 800 800 0 10) 0 21,654,400 | 1,600 0 
hy pee ee 3,640 200 200 0 0 990,800 0 200 
ree ON Oe 3,840 400 0 0 10) 2,282,400 0 600 
| fleboYsy Wyse ree 9,600 8,000 200 0 (0) 7,800,000 0 0 
AS Pee ape 5,600 1,600 800 0 0 6,480,000 0 0 
Se hl pore ae oe 5,600 800 0 3,200 3,200 12,010,400 0 0) 
af eee ee 14,400 2,400 100 10) 0 6,491,200 (0) 9,600 
allie OMe ee 8,800 2,000 160 0 10) 495 ,640 0 0 
OM LIP cas 10,000 2,400 800 400 400 3,900,920 (0) 400 
So NOR ar Ie re | 12,800 2,000 0 2,000 2,000 721,640 0 400 
nea SD Ores 2,400 400 0 14,400 14,400 487 ,000 0 0 
os aoe a 5,600 800 0 17,600 17,600 4,474,400 0 0 
wi Oy earn 2,800 400 0 78,400 78,400 69,000 , 200 10) (0) 
ee DLO eae 8,000 800 3,200 13,600 13,600 253,600 0 0 
HD RCO POR RAS 12 ,800 0 2,400 20,800 20,800 728,000 10) 1,600 
fin kc Olen 6,400 800 800 7,200 7,200 122,400 0 0 
Sept icOha ess 5,600 0 800 4,800 4,800 120,001 ,640 0 800 
Seah Lhe Aare te | 11,500 0 500 500 500 1,451,120 (0) 9,000 
oa) BLO awe 8,500 500 0 18,000 18,000 1,923,500 0 2,500 
Po SD ieee An 25,600 1,600 1,600) 65,000 65,600 851,400 0 10) 
@ct: ~ ~Ay. 8,000 500 500 0 0 720,000 0 0 
iar See 2,500 1,000 (0) 0 10) 843 ,540 10) 3,500 
bitin) foster any aes 2,000 1,000 0 500° 500 1,744,000 500 5,000 
SENS O8) Saar: 15,000 0 60 500 500 1,334,000 500 35,000 
INOWA pelea | 15,000 1,000 60 0 (0) 985,560] 2,000 31,000 
- Sricesee | 5,000 2,000 2,000 (0) 0 965 ,000 0 22,000 
Rd sheen 17,000 2,000 0 0 (0) 488,100} 1,000 28,000 
Se E22 A ata 48 ,000 8,000 400 0 0 750,640] 4,000} 108,000 
“Si D.9" aes 200 0 200 0 0 721,500 0 47,500 
Declis (OSkeGen 0 (0) 10) (0) 0 720,580 40 7,000 
HS ee 0} 10) 0 0 0 1,573,800 100 16,400 
Sat aOR Bieta 0 0 10) 0 0) > 487,120 0 16,600 
Shak ileal | 200 (0) 0 0 0 490,600 200 28,000 
Average...... | 7,194 a5: 368 4,871 4,760 15,812 ,346 630 26,546 
