TWENTY-FIRST ANNUAL MEETING. 



93 



cannot hurt the trees very well with. You do not have to 

 take all of the precautions that my friend Repp takes with the 

 crude oil. and it has that great advantage. There is no dan- 

 ger of killing the tree, and you certainly kill the scale if you 

 put it on right. We used nothing but the plain lime and sul- 

 phur. 



Mr. Ives: Was the strength one to thirty? 



Dr. Stewart: That was the strength that we used it 

 at. 



Mr. Ives : I think the gentleman ought to make some 

 explanation of that. We would not think of using it in the 

 summer at such a strength as that. He must be careful or 

 he will set us all wrong. 



Dr. Stewart : I want to say one word here, and that is 

 that I am not recommending spraying for scale in the summer 

 time. I am merely giving these illustrations in order to show 

 that the lime and sulphur mixture is efficient for killing the 

 San Jose scale without any possibility of doubt. We believe 

 in a dormant application of one to ten ; and this summer spray 

 of one to thirty is about the outside limit. I have, however, 

 used it twice that strength in the summer time without the 

 trees suffering any injury. We are recommending one to 

 forty for summer spraying. It is the poison that is added 

 to the lime sulphur, I think, that does the damage. We shall 

 be able to prove that beyond any possibility of doubt, I be- 

 lieve. For example, in one peach orchard of that section this 

 year w^here lime-sulphur was used at one-third strength, and 

 in some orchards at another place, the whole orchard was 

 ruined. The lime and sulphur was all right, but the grower 

 had the wrong proportion of arsenical mixture, 



Mr. Wheeler : What is the nature of the soil that you 

 plant your pears on? 



Mr. Repp: It is a gravelly soil, not a heavy soil, a 

 little inclined to be sandy. It is a gravelly soil, but not very 

 loose — sometimes rather hard to work. 



Mr. Ives: What varieties do you raise? 



