37 
the leaves, and on the 10th instant he wrote me: ‘ I have an extraordi- 
nary crop of plums in consequence.” 
With regard to foliage of the sprayed trees, he says : 
I find that the Pershore Egg Plum, Victoria, and Damsons, have their foliage quite 
uninjured and looking very healthy ; but Czar and Rivers Early Prolific are decidedly 
injured, and New Orleans in a lesser degree. These are all the varieties I grow. 
Evidently some 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 we are more experienced. 
I syringed 60 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. BR). 
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 used with success on 
several kinds of plums, namely, 1 ounce to 10 gallons, and too much 
being put on 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 caterpillar presence which occurs compared to previous ap- 
pearances where Paris green applications or banding have been prop- _ 
erly attended to. 
But I should be ungrateful and fail in proper thankfulness if I did 
not acknowledge tbat, for this benefit to British fruit-growers from the 
use of Paris green, we are indebted, | 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 [am 
bound to say (and I 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, I greatly doubtif 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 pestis unknown to them they for- 
_ward it to me and I identify (or procure its identification) for them, and 
