28 THE CONNECTICUT POMOLOGICAL SOCIETY. 



About the middle of June, possibly from the 7th to the 

 10th of June — if I was to hazard a guess as to the time in 

 this latitude — some of them emerge. In some instances, 

 if the weather conditions have been right, they make their 

 appearance late in May, and, on the other hand, as late as 

 the first of July. From the seventh to the tenth of June 

 I should presume to be about the time of their emergence 

 here. The female moths commence to lay their eggs, if 

 the nights are warm ; if the nights are cold, they sometimes 

 wait for a week, and even ten days, before commencing 

 very well. The eggs are laid almost entirely on the fo- 

 liage. We used to think they were laid on the apples, but 

 very careful studies have shown that they are laid on the 

 foliage. Here we have a little section of a leaf with the 

 egg shown up here. It merely looks like a blister. The 

 egg looks like a white blister, and it would be rather dif- 

 ficult to see it unless you are familiar with it. Probably 

 about seventy-five eggs are laid by each female, and they 

 are laid during the course, maybe, of two or three weeks, 

 depending a good deal on the weather conditions. This 

 picture shows one of the eggs very much enlarged. Now 

 we found out the place in which these eggs were laid, by 

 some very careful work in which we put a large cage over 

 trees eight or ten years old. Then we took one pair of 

 moths, liberated them in this cage, after having gone over 

 the tree to see if there were any eggs upon it. We loosed 

 a pair to moths and allowed them to lay. Then we went 

 over the tree again, and found out where the}' had laid 

 those eggs. In that way we were able to follow the actual 

 life history of the pest under normal conditions. We also 

 had other cages which we attached to the limbs so as to 

 study the life history of the insect. The eggs hateh in 

 about ten days, and from the egg comes a little caterpil- 

 lar, a little fellow about a twenty-fifth of an inch long. 

 They mostly all have black heads, begin to crawl about 

 and feed upon the soft parts of the foliage. They feed 



