21 



Matured larvae collected at Morgantown on July 3 produced moths 

 on July 16-17. Matured larvae collected at Elkins July 9 produced 

 one moth on August 9. Therefore he thought that at low southern 

 sections in his State the moth might be two-brooded, while at high 

 northern sections (Canadian zone) a second brood would rarely, if 

 ever, occur. He also was inclined to believe in the three-brooded 

 tlieory for the South. 



Mr. Gillette suggested that it would be interesting for Dr. Hopkins 

 to determine the number of broods of the codling moth in high alti- 

 tudes as compared with low altitudes in his State. 



Mr. Gillette had found it impossible to determine the number of 

 broods with certainty without actually breeding the moths. 



Mr. Ball stated that it took an apple a definite length of time to 

 reach maturity and, in his opinion, this would determine the number 

 of broods. The period of development of the fruit being the same 

 North and South, it follows, in his opinion, that the number of broods 

 would be the same. 



Mr. Felt, in speaking of the variability of broods, cited the elm-leaf 

 beetle, which has one large brood, with a second brood when the foli- 

 age is sufficientl}^^ fresh and tender to support it. He asserted that 

 the second generation was produced from the adults of the first brood 

 of larvae. Trees infested with the second brood of larvae would fur- 

 nish adults which may fly to neighboring trees and develop a third 

 generation. There may be, therefore, three well-defined generations 

 under proper conditions. 



Mr. Gillette stated that the appearance of late foliage upon the 

 trees could hardlj^ account for the appearance of a third brood of the 

 insects to feed upon them. He did not believe that an abundant food 

 supply would cause the insect to pass through another generation. 



Mr. Hopkins stated that it is possible for the number of broods 

 of an insect to vary according to conditions. 



Mr. Felt agreed that favorable conditions would produce additional 

 broods. The Hessian fly, for example, according to his notes, pro- 

 duced an additional brood when weather conditions were favorable 

 in late-sown barley. 



Mr. Gillette observed that if the codling moth is three-brooded 

 an3^where it seemed as though it should be at Grand Junction, Colo., 

 where the season is long and where there are both early and late 

 apples for the insects to feed upon. Extensive observations in that 

 locality, however, indicate that the insect is definitely two-brooded 

 there. 



The following new members were enlisted: James A. South wick, 

 Providence, R. L, proposed by A. H. Kirkland; A. N. Caudell, Wash- 

 ington, D. C, proposed by W. H. Ashmead. 



Mr. E. P. Felt proposed the name of J. J. Burden, Stanley, N. Y., 

 and Dr. James Fletcher projjosed the name of Percy B. Gregson, 

 Waghorn, Alberta. 



