I'AMMKl.-! rN(.\S 11^1 a; 1> UV IKVll llsl.l.> IM KAVA. \)l 



».)rjX.niic luatlcr coiitaiii '<| in the \val;'i', l»iil also I.) the iri'owth 

 of a iuior()-or<>"auisiu. Tli' water Ik'Idw tlii' glucost; and 

 stirch works al the alKuc phici-s coulaiiiccl lai-irc (luaiititics 

 of a urcvisli L;('lalinoiis suh-taiicc. In iuicros('()|)ica] cxainiu- 

 utioii lliis was found to (-(Mitaiii lar^-c lunuhcrs of putrefactive 

 bacteria, hut especially coiiinioii was Be<j(jiaio(i allm^ which 

 is not uncomnioii on the dead filanienls of ahjiv and other de- 

 caying orufaiiio matter iu watcM. The odor of h\(h'oa-en sid- 

 phidc was \('ry pronounced in tlie fresh nialei'ial. Aftei' the 

 hea\y rains in June the <>'(datin()ns masses were wasljed away 

 and caused little trouhle for the rest of the .season.' 



SOME FUNGOUS DISEASES OF FRUIT TREES IN 

 IOWA. 



1;Y I'KOK. 1.. H. I'AMMK!,. 



iAbstract.\ 



\.V.\y r.LlOUT OFTilK I'EAll. ENTOMOSl'OUir.M MA(a LATTM LK\ , 



Last sunnner while investio-atinir a cotton disease in Texas, 

 Mr. R. 1). Bhicksliaw caUed n\y attention to a disease among 

 some of his r^e C'onte [)ear trees. This was in the hitter part 

 of June, the lea\ (^s were falling ra|)idly and of some all had 

 fall(Mi. Since then new leaves and flowers have heen pro- 

 duced. On returning to Ames I found that many of the 

 seedling pear trees in the (u'chard were affected in a similar 

 way. The disease was (»s[)e 'ially had in the nursery. With 

 t he e\ee])tion of some of t !i(> Chines;^ peai's every variety in 

 the orchard sut1"ered more or h'ss. 



Nearly all of th(> young trees set out hy Captain Speer in 

 tlie expi'rimental orchard of the ex[)erimental station lost 

 most of their foliage [)rematurely, regardless of variety. The 



I — The reader i< rererred lo Dr. Kennedy's paper in July i5ull. Iowa State Board of Health. 

 i53o. for an extended account. For an account of the I'fe history, Zoof. "Die Spiltpilze," 1884, p. 

 - ■: l>e Kary, •■V'orl'isungen uh-r Bacterien," Knjlis'i trnnsKtion Garnsey and Balour, p. ;rf ; 

 VUiui^f! M ikro-organisnien. p. 39'^, Warming, Oin nogl,- ved; Danmarks Kepter leoende; Bacteri' r 

 in Vilc-nsk N'cddel Uer fr.i d. Naturhsi. Korenina, Copenhagen, 1S75; I''arlow Ma'ine .\ljac 01 

 New Kngl.md, p. 28 and p. 32; Colin, B; ira.;e, I Heft 3, p. 157, etc., etc. 



|r.;i)C. I. A. S. iS-^r-g.) ,,i IM-Jirch 10. iSoo.] 



