37 



the leaves, iiiul ou the lOtli instant he wrote nie : " I have au extraordi- 

 iKuy crop of plnnis in C()nse(inen(;e." 

 With regard to foliage of the sprayed trees, he says : 



I find that the Per.shore Ej;^ Plmn, Victoria, and Damsons, havetlieir foliage quite 

 nninjnred and looking very hcaltliy ; but Czar and Rivers Early Prolific arc decidedly 

 injured, and Now Orleans in a lesser degree. These are all the varieties I grow. 

 Evidently sorno varieties of plums are much more easily injured than others by Paris 

 green. (I. R). 



I hope, before preparing my next annual report, to obtain detailed 

 information on this subject from various quarters, but I think the fur- 

 ther observation of my correspondent (M. J. Riley, of Putley Court, W. 

 Ledbury) well worth attention here until ice are more exi)erienced. 



I syringed (30 acres of apple trees which were badly attacked by caterpillars, 1 ounce 

 to 20 gallons, which seemed to kill the caterpillars, so that one naturally asks, why 

 make it any stronger for plums ? (I. R). 



But I find difficulty in persuading people to be moderate, as they 

 desire a strong spraying to do all the work at once. 



M. J. Riley further notes, relatively to effect of method of spraying, 

 that last year (before we could procure proper sprayers) he had only 

 common garden syringes ; that he syringed " Damascenes," badly in- 

 fested, with the same strength of Paris green now nsed with success on 

 several kinds of iilums, namely, 1 ounce to 10 gallons, and too much 

 being put ou so that the trees dripped, the lower branches were killed. 



After our real difficulties, and the boundless and fathomless amount 

 of damage and trouble predicted last year, it is a very great satisfac- 

 tion to me to have trustworthy reports of the excellent state of foliage 

 of trees properly sprayed last year, and also to find the greatly lessened 

 amount of cateri)illar presence which occurs compared to previous ap- 

 pearances where Paris green applications or banding have heeUjprop- 

 erly attended to. 



But I should be ungrateful and fail in proper thankfulness if I did 

 not acknowledge that, for this benefit to British fruit-growers from the 

 use of Paris green, we are indebted, I believe, primarily, to the exer- 

 tions of our respected friend, now holding the distinguished office of 

 Entomologist of the Department of Agriculture of the United States of 

 America, and likewise to the careful working forward of the subject 

 both in the United States of America and Canada, and for myself lam 

 bound to say (and 1 hope you will permit me to acknowledge) that but 

 for the efficient and kind help you were good enough to give myself 

 and our Gresham committee, 1 greatly doubt if we could have pushed 

 the subject to its present well-based standing. 



Our Gresham fruit committee is doing good work by the investiga- 

 tion of the members being extended to all other noticeably injurious 

 fruit attacks which they discover to be present. These are entered on 

 at their meetings. Where the insect pest is unknown to them they for- 

 ward it to me and I identify (or procure its identification) for them, and 



