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Plankton produGhOns..nseeis susie sak vat veces eves see cecenera ts 342 
MET SO Osea ete vere toch tice More ile eyerstnts ors el fatemntome einem eee et enae ecislece’s 342 
MET SO iene verte cise teins Geis seven Seas» Ae oe tec ak nba e weree oR wee 5s 343 
Causes of the large autumnal production..... 5 345 
IMEI SOS =O ea teincay Mraisic at ave SeteiAs ats iar nace torneo oe ne nies ete seaisesioes 347 
Sioa oes one Brae th aaa aS ee eee 349 
QuiversiakejStation: Grreasrst sscncccses hetéwessaettsccetescwes 350 
ENVIKOnMeEeNtaliCOMGIOMS sac - eine cc selec. civies ei Se siecle cision ev Sleleelelatas 350 
Coll SGHONSe Ar tancns net catate Gav ase Roe Se clk wate tales Seniesa wane 352 
Plankton sprod UChonmeowsvs ole tmecineccils a ocn eat ve Semeuken e eilaseares 353 
HHS LOO Histerste sete ister hee sera are sisi tia esis vecin theese Sele) Ale eereeene se 353 
EMT SO Bicteae crs ere teat osts eee Nereie sesso sere gale ecdlaletronsleaty sinew ve saree epere-ed 354 
Ta SOG eee cs secetoe aera a arie orate, Av eal a atvavad epaiefesieis nealarciete'e 356 
Comparison of plankton pulses with those of river............. 356 
(Cansei LincCreased PROC UCHOM rc afore crocteiereie chs rela cictersie eisiereiereieie 350 
NIT EO 7) cparets) = ste leaycieyavels cite ets Foi sie rcidcle ed. c eve treceiai eis sejeievmeh aiciaye Sale 361 
In 1808.. : 363 
MITRE GOD yar paravarelcicister pee vetrevelele aiareicran = ceval/ela\e/a, glarelacoie'e attcisimets wjsieeierets 366 
US MAG: ta ClOMe ere pay ctecemy icin oasis siet-lclecicoe sacle elses esis le aieichereiere 367 
Mnivinonumentalll COMGIMONS Here = veveierarcic ole =e Separs wiscc/e ce oa csl<oratleleiste 367 
Collecttonsie ce nrcah. hae eee eae ahtaies a aise assidieseinlee Se ce.sens euseiae 368 
lamitompprodwettOntrseeveisisries me drecret = s)ckeiaimecnevs «erie ee etree eaten 369 
I EISO Gee e on Meets oe Gate one eee ad dene eh caiman ceeds et sae 369 
RMT SO Oe eerie ati acetone staic sera Oss SSs Meare esi asisteg erew eee eine rer 371 
The vernal: pulse: cause of acceleration. ........565.00. 00.0 372 
Similarity of course of production to that of Quiver Lake....... 372 
Relation of local factors to dissimilarities ...... ........-.... 374 
Bffectiofbigh waterom production\.....-..0....<cesccsesss css 377 
Comparison with Quiver Lake................... Sooasenoemace 377 
TABS) 7c cteheeaty state eeepc ue eveia here ayatesn Laiersteveceaucicreiais: stele acaietenarettvere ss 378 
Summary of relations of Quiver and Dogfish lakes to the Illinois River. 379 
Empounding function of laAKeSSs. cee. acre ce = slic odes av cose vewer ccs 379 
Bare Ct OMMVeEr etatlOowis arc ate Pere sete oc) cuelercete sine cis cielbieva/m erwisterels sinve's are ere 379 
Similarity of movement in production in lakes and river............ 380 
Pilapialalems tatlomulNacmryaame tet tercrrstorctsl-tate)ajaie cle serene cielere latte’ share eiaja/eve = 381 
EB nvironmentalitcondittonseics «s/s ccie oc si <\ejare(aectc(ais eye ae sates cs = 381 
Gollection steer teckeerr rae eis cece sheers =o) wsisis trees “cttoR Roe oe 383 
elamktomm produ GtlOM etre staves <i <ic/</sra/etclarslelsietsieaie ele eielsiaiaininle's elela'oy 384 
NIM O Serre eee echt tier tors nic inte aie ereisie oleic sictevereieiniersisiwis wreieistereiaccie 384 
MNES O eratatet ctafeteotet wistelalaicy etsy ol cielo) secs a0 eictetste giaisisiote ote sare Wolters rer aieteieiele 385 
FAV G roo rap li GiCONGItlOMS)). <1 eiese ato. crel sie eisie el sie= oielein =e miatelelal==1=) += 386 
CoOntrpUtlONS ALONE LVEN ara. sie eerie mielsveterelelerey else aletaitere oe) sivisi= 386 
Similarity to other stations in movement of production......... 387 
Sudden decline from vernal pulse...................-.-..-000- 388 
It HES 7Ee Saidab poor ORNOE OS SOEOORDREAOD ODO daiueay oo bouceSnocdDonE 389 
IVa) 4 Sago dSuaida Ss aoReabe cod Cond GUnUss HEMC Oooo ID NUnd DoOobaooo 391 
