PARIS-GREEN. 
85 
The plan of operation was for the members to try the effect of 
any kind of sprays, washes, or other applications which they might 
judge likely to be effective in destroying the caterpillars on orchard 
trees without injuring the leafage; and to meet at various different 
centres from time to time, so that the whole Committee could judge of 
results of various treatments, and consultation and detailed reports of 
the method of treatment take place, or be given by the members. 
Also, as it was before us all, in reports of the Agricultural Departments 
and State Entomologists of Canada and the United States, that for 
years back attacks to orchard trees, perfectly similar in their nature to 
those which have been causing us such loss here, were lessened or 
wholly prevented there by applications of spraying with the chemical 
known as Paris- or Emerald-green, of which we had full working 
details,—one especial part of the work of the Committee of Experi¬ 
ment was to test the serviceableness of this especial application in our 
rather different climate, and with (at that time) our inferior apparatus 
for throwing fluid. 
This plan was thoroughly carried out, and amongst the special 
consultations may be mentioned the meeting at the Toddington Fruit 
Grounds on the 1st of May ; also at Seaford Grange, the residence of 
the Chairman of the Committee, on the 14tli of the same month ; and 
on the 11th of June, to inspect the plantations of Messrs. Masters & 
Groves at Greenhill. At these meetings the several experiences of the 
members were given, showing clearly that, even under careful experi¬ 
ment, just the same uncertainty occurred, with regard to good 
effects of almost all the applications, as has appeared to be the case for 
years back. Alum, hellebore, clirysoline, ammoniacal liquor, &c., 
were reported on, and sometimes found useful ; sometimes, as in the 
case of alum, found occasionally useful, but also, and on very careful 
trial elsewhere, of not the slightest service; and later on, when the 
caterpillar was more advanced, the alum was found to be of no 
service at all. 
Full reports of the information given by the members and the dis¬ 
cussions thereon, likewise their reports of the condition of the trees experi¬ 
mented on, were given at the time in the local journals, so as to be pre¬ 
served in detail and accessible for reference ; * but the results embodied 
in the recommendation of the Experimental Committee, given after their 
consultation on May 3rd at the Toddington Fruit Grounds, may, so far 
as “ Paris-green ” is concerned, be rested on as confirmed by repeated 
trial subsequently, and the good results shown by the autumn returns 
of fruit in such cases as I have report of. 
The Committee, in reply to the statement that “ many people were 
* See especially ‘Evesham Journal’ and ‘Evesham Standard,’ of dates of 
Saturdays immediately following days of meeting, named above. 
