278 Kepout of the Dei'autment of Entomology of the 



There is evidence of injury to the peach buds with the strong 

 gas. Evidently the gas at a strength of .22 gram of cyanide with 

 an exposure of one hour did no harm, as the percentage of treated 

 buds set is greater than the percentage of checks that set. But 

 there is a decided falling off in the percentage when the gas was 

 used at .3 grams of cyanide indicating that the gas at this strength 

 injured the buds. Comparing the whole number of buds treated 

 with the checks, howevei-, there is but little difference between the 

 peaches, pears and cherries. The whole number of peach buds 

 treated was 732, of which 70 2 per ct. set. The whole number of 

 checks was 728, of which 82.8 per et. set. 



riie growth, of the treated peach buds was in nearly all cases 

 c p:ai to the checks. 



