iv 
The Illinois River from 2 miles below Havana to 1.5 miles below the PAGE 
headmot (Grand MSTA cr cic, crore joteleyeseceveueveis sos) e elelinl el cl (isle eieisiatera team 54 
Three all-bottomland lakes and one sand-beach lake between Liverpool 
EhaGlale En Ghol wane aco Geico qocbo.cb BOO Grn Pen coreados moc. oo 59 
Stewart Lake, an all-bottomland lake of the shallower type, twenty 
MHAVESE SOM MO LAE VAN A ere wnentersicyeue cdeacve wonsts\ s/c oye ta-alleya ale Seek eee 70 
Estimated reduction of midsummer surplus stocks in the combined 
acreage between Chillicothe and Lagrange...............--....-- 73 
ARTICLE V. THE HELMINTHOSPORIUM FOOT-ROT OF WHEAT, 
WITH OBSERVATIONS ON THE MORPHOLOGY OF HELMIN- 
THOSPORIUM AND ON THE OCCURRENCE OF SALTATION IN 
THE GENUS. BY F. L. STEVENS. (23 Trext-ricures, 25 GRAPHS, 
2G SPTSATHS )e ONE, LAO 2.5 cseteia, accyare sie Bish nse Sic ¢: » cao letader erat Cand earner Ch tae eae 77-186 
MTUEPOM WU CLOLY, 65) savesssevelera rae ss-cae ee tsuele sone leia la. (one) ons: voices, attayecohanatek. aera ae 77 
SA CEMOWIEUEIMENIES 5 oc ieteisratous e's cetshe 6. overs “e-ie('rre 10 Bue vefa wb coqenspavCnesetalhes Rane tone 17 
I. A foot-rot of wheat and its causal fungus: 
SY MUPLOMIS Tra eveveachsnave: ot svaparexstes saa) anal cite a laave toiley eilo.a: iavavteliereVanasebelete seen te eneneenanE 78 
NIM SUB PNES ON beast este opreiets | ceerstaye elon cacin.cisceys come geerat ave Pen Gace oocc 78 
Growth of the causal fungus on various media...................5- 79 
WaATIOUS (AZALSiVAS IMCUIA. biel cio rs:0: 5) se ore b Svatecetys «6 9 01/2 ea) ale REE 80 
Summary concerning prowth on agars: ....)..0.. .. « «cr «sien 85 
Rice and similar substances as media, with special note of color 
MMEMOMI CMA! Fate os oie jonss eierni's ailoleys Crdydceroutnere ers whei'e Sycle eran nee eee 86 
Summary concerning growth on rice and similar substances...... ~ 88 
Miscellaneous veretable Medias iiss ccccccdscs desu cydhe ols Oe oe Ue eee ee 88 
Summary concerning the foregoing vegetable media............. 90 
Cereal shoots grown from aseptic seeds as media................+ 90 
Environmental factors which induce variation...................:. 91 
Ourantity (OL MUtriMent. 25 cccss cre sie cove a 8 sore s.aceceie sree Ne eevee Tene 91 
ANHIPLWOTY VAN AWEMCES? co.cc oc etc. esrave crv eave erae wi cue eee re eee eee 93 
EAE ya OR ATC DLAs: 55) <c rs or < eye yausrs evoyarey aie a suese a: ev avers cia eholete Chore area 93 
EAN UG YVATOT CALI s ersreal syekevs, wiareiercite ix’ sexes seretsipicke cvovelstous tage reveten heen renee 94 
PEM POTACULE TOLALLOWS a. bie. a) oni sie 6.000): sess eceidie eld ells [ol nye eyes ee 98 
MSU PT pagan orstetelcyeieteialere ace. ste s.a sip "eye. bie) als: avaswyodesets. oe acre teneerereee Pape aela nw 99 
War DOHC ALCS wore) eye) ute tel wits say's) m1 5) 6:8! a a0) «recwre\ c/s'ce, 5G: 21 sa)e)/= ere ae ee 100 
Nutrients as affecting conidial length, septation, and shape....... 101 
Summary concerning environmental factors which induce variation 102 
Morpholopysotathe foot-rot BUM Ss'., 5. <)2c. ceeies ac +, vse crm ce eee ene ee 103 
VT GU ERTINY wravcts 1afaj sna rettente, eyes pete tia: sakca a cue Sighs cos, soda Goal Om Ua CTR Oo 105 
Senescence phenomena of aerial mycelium....................- 107 
WONTATOPHOTES: veloc ie cornice Nec ayete were alos ow cre moe alae here fee 109 
(Goi nhEh SA Sans cco cA sc oO OESIC OOO eG eh ic miobiGa. cio p.cr 110 
Etiology of foot-rot: 
Hyvideuces of etiological’ relation of Hi No. dW)... sence eee 124 
Constant presence of the pathogene................ee0cecevees 124 
Absence of other constant ‘parasites .cc/kcicen ow 1a Oe eel eRe 124 
