CONTENTS. 
- 
1 [ECAP DO RIGIDTOVE ER laser ee UA apace EAE, ca aac a 
Distribution of Collections by Months :(Table)..... 02.500 0.0....2%. 
Mal Seeteeeee Merete een ay! Sim eats eye to enh Os Sites Shows dh awe sd 
ERC RMOMPE OM CMM CI LSet apeere Aa lover aid tani cas nee Ms oc ale alae orcucw eke 
MB eet ss OLS ee aye tetera cas 2 MESO, Fac cd SIS 8 ee ee SG eas anda ons 
pire Composition«ol the Planktoniecas 4 $s... 25+ wi cede cis bueesee es 
Comparison of Fresh-water and Marine Plankton................... 
ARENAS GOSTOIE ISHN EZ Ez ee Orc Re eee oe ec 
Constituent Groups of the Annual Plankton of the Illinois River (Table) 
Discussion of the Statistical Data of the Species composing the Plankton 
OnernciiieipissRaver til S94 1899) aw. ca gd we wees eee shia 
eo PUNTO TION Ack aie he 5 Oe ee gee ee tee 
| BA NCUETR OSES 0s Ba eee: GPS se RO en Mn 
(SIE EMMA BI AS SEE eS od te eA PE a 
MPS UGS TONES DECLEST) xttaer A emo oe me's thd Ladl etl ott saa oS we OE 
Rei Moronpilny Coconuts feat og ch toce a cco eeciwi-cs sccc POOLS ont hen tad 
DS CHGS HOMOn DECI SHS acae Se See ais neces NAS Duclos Sle be Bo 
BS tcillariace cen ec. Ae eee ey ra RE NaS ce ad « aha oct ton Ue. 
Bactors controlling Diatom) Production: ......20¢.:.+ ds: sec. se 
Diagram showing the seasonal distribution of diatoms, total 
plankton, nitrates, and thermograph and hydrograph of IIli- 
HOISMNIMeD Ab lA ValA Tt Orel SOCK Mer kids cis mpcstuaies Alone «alee rises 
WISE HSI ONEOUNS PECIEG Se Cyt oc mne Seine bio nviaht At sts oe le earn RE coe os 
Ciscoe ee eas ee cht at Alaa ale Gs AD we ie Ak nee Bae 3 
Sees IOUsOn. SMECIEGIE, (eae rere eh eRe Te Ae oa ly 
| DISS rAVEs ROE NAAUIE 3 ee a 1 eee cd ep ee a oe 
J PUROL REE AO LEE Need ase mere em Senay ORC RT eae na eS  a  a 
MMs GIO po Oars Ne ere hey ara aa eens Pas ee Ua Ree cob dooce whe cies Be 
Location and Amplitude of Pulses of Chlorophyll-bearing Organ- 
ism Shiiet Herd linGis: waver (Chaplet g cc.a4 ce ees» couees ac ee ee 
DWASCUSSIONLOL SPECIES T Acer en se ai oe ee ce cio hae Be 
JE NATO OLSL6 2, ec se Rae ee Se He en me Pm Pee 
PC CUSHIOE OMS PECICS yess Lark otss Fh ues ar rn Vlora Ue aise 
Pe eco arpa eriste ele Shae i hk & eugene os Neo ehatiars dinate Syd SSE 
HOS CUS SOMO by OPE CICS. 1 ae OR alee eerie Sate Sante SES ce 
SYOICTO AOE S05 Nester ee Bes RPS Pee eM ae Ra Gee 
\ OBIE SS Biche te ane ord ele ee cA ee AR Se Sa a 
DASCHSSIONNO lS PECIOS a ney ena iel a Sug. ella a, exe Goh Cs Res SEP iets 
SBS HOT EIEN Sg Sts ch RT ORS EC eae a A 
Mic eUSStOiy OP ODECIES yao Matalin ae nasa os Secs tee hour ee 
LP OSRERESER. hate Wig i eee tho aS RC RO ae aa 
34 
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