AD AN 18} 1; 18, 
Sully) 
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.) 









g | % 
8 | = * ~ 
4 88 £8 ‘s 
~ = ps Sse S s 
a a: 23 38 Pe, | 38 S2 
> 8 S38 25 ws 
5a SS gs ES gs os 
& x S q & 3 
| 
eral sala Deere 239,580 146,280 | 0 0 0 10,000 
SOs eae eee 49 ,003 ,100 1,200 3,000,000 | 12,000,000 0 0 
oe Oe eee 3,774,901 10,620 0} 0 0 29,025 
| | 
Rebi) 34-1522. 9,268,530 5,500 | 0 | 120,000 3,180 11,250 
2 Bice a aces 7,464,880 17,200 0 60,000 0 0 
Ome. 29,266,000 12 ,000 7,200,000 200 , 000 0 0 
Col 0) eee eet 21,911,653 0 0} 14,400,000 0 78,975 
Wie Phe eee 11,850,400 0 0 3,600,000 | 0 0 
a Se Asa ats 9,080,800 0 0 0 0 0 
eee lS). 28 254) 24,342,400 3,200 8,100,000; 4,500,000 3,000 130,000 
Co 0 a eee 42,589,120 5,920 16,200,000 0 0 161,600 
Seen ZO, eo cel 18,693 ,300 17 ,000 10,800,000 0 0 72,500 
| 
Aare OTe k}.5) axes | 8,760,120 42,320 900,000 | 60,000 0 15,600 
sede Diego sretas 36,990,300 170,500) 22,500,000 | 0 19,920 40,000 
ml a2 794,044,320 24,059,000! 725,400,000 0 19,920 40,000 
BME? One 88 rags: 3,453,778,080 891,648,000 2,880,000,000 1,800,000 374,080 200,000 
WES Sia eee 2,583 ,832,560 197,683,200} 891,000,000 18,000,000 924,800 390,000 
Pe NOS ysec5. 298 3,865 257,360 | 27,175,680 |2,668,000,000 | 10,800,000 | 14,469,120 255,960,000 
Sy US eee 1,795,608,400 19,699,200 1,260,000,000 | 14,400,000 388,800 4,110,400 
ites DATS <s.25It 43 ,487 ,480 15,080 18 ,000 , 000 1,800,000 0 1,504,800 
Vee) ene eae 138,879,370 | 362,880 88,200,000 1,800,000 | 0 587,450 
fone: geet 182,162,000) 3,283,200! 55,800,000 0 0 434,000 
eA eae. 1,039 619,680 336,194,880 46,800,000 0 0 404 ,000 
Be Po oe | 340,702,200 100,320 0 0 0 199 ,800 
SoD Sie oa) 350,220,000 | 34,560) 291,000,000 1,800,000 0 220,000 
Timi Stee eoe 135,090,000 3,840 | 50,400,000 1,800,000 0 50,000 
US hen aes 127,576,000 0 | 72,000,000 900,000 0 120,000 
wee OR Oreo ony 788,521,600 0, 561,600,000 3,600,000 0 0 
bie 72 Olver 87,702,400 0} 63,000,000 0 0 (0) 
Agim 25 eyes 111,750,400 4,800 54,000,000 0 0 0 
iB Qe aa yeks 443,526,000 1,200; 401,400,000 3,600,000 0 0 
SIGE ae 115,018,656 0 97,200,000 0 0 0 
MEAS ace 180,994,200 0} 122,400,000 0 0 0 
ae a (Stes 209 ,793 ,200 2,400 93,600,000 |} 2,700,000 | 0 0 
Sept On en 186,870,800 0} 115,200,000 0 0 0 
Ct eee eee 167,208,500 0 66,400 , 000 0 0 6,000 
SAO seg ee 87,481,000 | 0} 3,600,000 0 0 0 
OS Ot lena 215,018,800 0 57,600,000 0° 0 0 
Oct A nee srove 131,418,900 0 37,800,000 0 0 0 
ee eae e 46,930,350 O° 7,200,000 0 0 75,000 
NL GIS er tee cs 58,436,500 0 3,600,000 0 0 0 
2 SOE ea ene 130,532,250 0 25,200,000 3,600,000 0 OL e200 
| : | 
Nowell 54,477,175 2,000, 14,400,000) 3,600,000 0 406,125 
s Se aetelate 72,584,120 6,000 18,000,000 7,200,000 0 609 ,000 
eel Sjryere ik 132,556,500 0) 18,000,000 5,400,000 | 0 1,866,500 
PL eee 295,111,500 |} 0) 18,000,000 9 ,000 ,000 0 17d, 500 
RDO a ae 218,309, 400 0) 151,200,000 Oo 0 2,254,000 
Deh Gey sy..5%3 308,149,750 6,000 | 287,200,000 900,000 | 0 243,750 
Ye Saale) apa ee 864,280,915 3,240) 811,000,000 0 | 0 75,625 
tie ZO)S.,5 ofrn5.5 332,305,000 10,500, 302,400,000 900,000 0 105,000 
Ot peter 239,550,800 800) 225,000,000 0 | 0 20,000 
| 
| | 
Average...... 396,192,727 | 28,860,160) 243,659,615 2,471,923 | 311,593 5,234,484 






