(An asterisk at head of column indicates that all entries in it are based on 
332 
TABLE I—continued. 
ORGANISMS PER CuBIC METER IN PLANKTON OF ILLINOIS RIVER IN 1898. 
filter-paper collections.) 






| 3 
a- ” on * cr) iS a” 3 7) s 
23 Z2 | § S © 8  § §)| S88e 
1898 Qde 8§ | §2 8 So ae) ES) os [ese ae 
S82 8 ss Ss SES) ee |) SSeS 
Sas as SS 3s |) SSSE | 88a| SSsS 
ao a | as a Sas RS le Sole 
Jame ell ees 0 0 0 20 20 20 0 
Soe C2 erie Sree 0 0 0 100 0 0 0 
SSRI tn 0 0 0 0 0 387 0 
Mea, mola aa 0 (0) 0 0 0 200 0 
ss Bs ec 0 0 0 0 0 0 0 
POV aA Shove 0 0 0 0 0 0 0 
ED Diora 3 ah 0 0 0 0 0 0 0 
Mar Mh Setisoe pete 0 0 0 80 0 0 0 
7 Sicisivovenels 0 0 0 0 0 80 0 
oe LIS oat cases 0 0 0 160 0 360 0 
are DAA pe eae 2 0 0 0 0 0; 1,720 0 
Tee O tee tune 0 0 0 200 0 140 0 
(Nore oe Stevspoee 0 0 0 0 20 100 0 
Be ee ARM EO 0 0 0 200 120 160 0 
Spt LD ees ae 0 0 0 2,800 1,200 800 0 
aD Oltieds aon 0 0 0 57,920 97,600 | 4,000 0 
WER? Gloaocoe e 0 0 32,000 419,200 0 0 
CSS ee 0 0 0 191200] 577600 0 0 
A honey 0 0 0 5'600| 69/600) 800 1,700 
ee ee 0 200 0 80 200 0 0) 
aed a hl eee, 0 0 0 0 0 0 0 
Wek) Gacoeon 0 0 0 200 0 0 0 
pen AA ae: 0 0 0 0 0 0 0 
ate oe 0 0 0 800 200 0 0 
one DS iewathoe de 4,000 0 0 0 0 0 0 
Afeiby “So nisoee 3,600 40 0 40 0 0 0 
ee een 10,000 120 0 0 0 0 0 
ite Ook Ae 85,600 80 0 800 5,600 0 0 
te 2G aan oc 3,200 0 0 0 120 0 0 
Nace kD ay 9 ,600 0 40 0 6,400 0 0 
‘ OS ie 11,200 0 200 1,200 2,000 10) (0) 
Spee llOnecn nse 20,000 0 800 800 37,600 0 0 
DGOR YT ARLE 8,000 800 0 0 35,200 0 0 
CEA eee 7/200} 3,200! 800 s00| 32/000 0 0 
SEDER Oeste 7,200} 1,600 0 0} 19,200 0 0 
ee Dee 1/500 0 0 500 4’ 000 0 0 
SED OW ex oss 2,000 0 500 500 9,000 0 (6) 
DDL aie ets ee 44,800 | 1,600) 4,800 4,800 78,400 0 0 
Oct Nom artie 80 0 0 40 1,000 0 0 
in URS eee es 0 0 0 500 0 0 0 
Pee L Sickest 1,000 0 0 500 80 0 0 
Sony? 5 ta 0 O, 3,500 5,000 0 0 
INOWeAneel eee 0 0 0 0 0 0 0 
ie Sis Biwrend. 0 0} 0 0 180 0 0 
oe el Seer 0 0} om 1,000 100 0 0 
Sah 2 Date oats 0 om 0) 400 400 0 0 
cree Oe aera 0 0 0 1,000 500 0 0 
Dec Oligegereee 0 0 0 320 1,160 20 0 
Pome ANS eee gears 0 0 0 2,400 3,200 0 0 
coe ZO aare 0 0 0 1,200 606 0 0 
Fie MEDI RE srtese 0 0 0 400 200 40 0 
Awreragecennnr 4,211 147 137 2,693 17,071 170 33 









Brachionus 
Total 
pala 
4,800 
159/520 
451,200 
76,800 
77,700 
280 
a) 
200 
1,000 
0 


