C()\T1:\TS. 



Pnfiv. 



("ll AITKK T. riilMAKV ("ONSIDKKATKINS KkI,ATI\ K Ti ) 1 'i;A( II 1 J:A I' ( "t Itl 11 



IntHMlnction ' ' 



General cluiracteristicH «if the disoasc 1 - 



( I(.'()<,'raiiliir distribution '- 



Origin of tlKMliscase ^^ 



Losses from the disease '" 



CirAITlOK II. NaTIHK ok PkACII LkM- ClIJI ^-J 



riiysical conditinns inlluencinjr the disease ^- 



The fungus rausing the diseitse ■'I 



Relations of the fungus to tlie host f 



CnAI-rKK III.— IIlSTOKY ol- TUK TREATMENT (H' TlCAl H I.KAI' Cl IM -1<> 



The European situation ■^'' 



Development of the present methods of treatment 48 



CnAiTEU IV.— Plan of Pkeventive Si'kav Wouk C'oNorcTEi) isv tiii: Dki-akt- 



M ENT *>' 



Preliminary plans for the work ''7 



Spray work conducted in 185)4 ''•^ 



Spray work conducted in 1895. 



/z 



> 



General t-onsideration of sprays applied "•'> 



CiTAlTER V. — InFIA'ENCE OK SPRAYS ON THE VeC.ETATION OK TME TrEES 77 



Saving of foliage from injury by curl 77 



Comparisoiisof weigh t anil color of foliage from si)rayed and UMsprayed trees. 88 



Growth of branches and leaf buds on sprayed and unsprayi-il trt-es 91 



The development of new' fruit buds and fruit spurs for the year f(jllowing 



an attack of curl •'•"' 



GnAi>TEii VI. — Influence ok Sprays on the FKriTixt; of the Trees 10:! 



Thinning the fruit of sprayed trees 103 



Gathering fruit of sprayed and unsprayed trees lt^*J 



Comparative quantity, (luality, and cash value of fruit from sprayed and 



unsprayed trees ^ ' " 



Comparative value of sprays in relation to fruit Ho 



Comparative size of fruit on sprayed and unsprayed trees 119 



Color of sprayed and unsprayed fruit ' 1 20 



Method of thinning and cost of picking peaches 121 



Thinning b'y hand and l)y curl 121 



Cost of picking peaches 122 



The local action of curl on foliage and fruit 122 



Records of trees sprayed on one side 122 



Chafper VII.— Preventive Spray Work Conducted by Orciiardists 126 



General consideration of the auxiliary work 126 



Notes on the auxiliary experiments in Michigan 127 



Notes on the auxiliary experiments in Oregon 135 



Notes on the auxiliary experiments in California 140 



Notes on the auxiliary experiments in New York, Indiana, and other 



peach-growing States ^^* 



7 



