DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



Table I. — Emergence of moths of the spring brood, Douglas, Mich., 1909. 

 [Records by R. W. Braucher.] 



Total, 114 moths. 

 TIME OF EMERGENCE OF MOTHS OF THE FIRST BROOD. 



The earliest moth of the first brood emerged July 28 (Table II). 

 It will be noted from the curve of figure 2 that the maximum of 

 emergence occurred unusually early — August 3. Throughout the 

 month of August there was a constant and large emergence. The 



F IG . 2. — Emergence curve of first-brood moths in 1909, at Douglas, Mich. (Original.) 



great irregularity of the curve in figure 2 is largely due to the fact 

 that the banded trees from which the rearing material was obtained 

 were only examined once a week. However, certain of the irregu- 

 larities of the curve are due to climatic influences. 



Table II. — Emergence of moths of the first brood or summer brood at Douglas, Mich., 19G9. 



[Records by W. PostifT.] 



Total, 194 moths. 



