50 ie 
Mr. Bucxe.—That is for the apple spot. 
The Secretary.—Yes. Hypo-sulphite of soda has been recommended and has been 
used by some with success, but it is not nearly so effective as this carbonate of copper. 
The only difficulty with the carbonate of copper is that the ammonia renders it soluble, 
and we have to spray our trees with Paris green as well, which makes extra work. If 
some way could be devised of using the copper carbonate and Paris green together it 
would save labor, but unless the ammonia can be dispensed with it cannot be done, 
because it makes the Paris green too injurious to the foliage. 
Mr. Orara.—At the Experimental Farm some work was tried in the same line with 
the Paris green and the carbonate of copper without ammonia to see if there was any 
beneficial effect, and with carbonate of copper alone and in suspension. I find that in 
water it will remain in suspension as well as Paris green, so it is possible it may be used 
without ammonia asa solvent. If, as the secretary has suggested, we can get a combined 
insecticide and fungicide it will be a very valuable acquisition. The carbonate of copper 
costs about sixty cents per pound in the precipitated form. Large trees will take from 
one to three gallons to do them fairly, that is of the mixture with Paris green. 
Mr. Bucke. 
the mixture. 
Mr. CrRaliaG. 
That amount of the stuff would make a very large quantity of 
Yes. We have used a different strength from that mentioned by Mr. 
Woolverton ; I have used it from one to three ounces and at the rate of twenty-two gallons. 
I do not think there is any doubt we will be able to get some results which can be- 
followed up next year. 
The Secretary.—As this is an interesting topic I do not think it out of place to fol- 
low it up. I would like to add that I have been applying it to the pear as well. This 
year the Flemish Beautys are horrible, covered with scabs and curling up in every shape 
on the side in which the scab has affected them and are certainly going to be utterly 
worthless. Of course it was too late with them ; I could not get it in time to apply early 
enough, but I really think I see some results from its application after the scab made its 
appearance. I have tried it on pear trees standing side by side, applying it to one and 
not touching the next and I think I can see a difference. I have not tried the sulphate 
of copper alone. 
Mr. Oraic.—I was very much surprised to find that applied in the proportions given — 
at Washington it injured the leaves, 
Archdeacon McMurray.—Would it not be well also to give us the proportions in 
which Paris green and other chemicals should be applied. 
The Szcretary.—The quantity of Paris green that it is safe to apply is about three 
ounces to fifty gallons of water. I think that is quite as strong as we dare use it, and about 
two ounces of the carbonate of copper to fifty gollons, mixed with the other. If you use 
the carbonate of copper without the ammonia, it, being a powder, can be used with the 
Paris green. 
Mr. BeaLi.—You mean adding one powder to the other with the one quantity of 
water—fifty gallons ? 
The SecreTary.—Yes. The two of them in solution with water. Take a barrel 
that holds fifty gallons and put in three ounces of Paris green and two ounces of the 
copper. Even with that strength I have often found that I have injured the foliage, but. 
that, I think, is because I stopped too long at a tree and sprayed it too heavily, for L 
think too much can be put on in that way. 
Mr. A. C. Bittups.— What effect has the Paris green upon the leaves ? 5 
The Secretary.—They look as if burned, and then drop. 
Mr. Brtturs.—Have you noticed that the carbonate of copper has any effect upon 
the curculio when used without the Paris green ? 
The Secretary.—lI do not know whether it would or not, not having experimented 
in that line. 
