July, 1914.] 



THE APPLE MAGGOT. 



79 



Table 21. 

 Ratio of Egg Punctures to Number of Larvoe Issuing. 



Mortality of Egg and Larval Stages when Drops are 

 Exposed to Sun. No apparent unfavorable effects were ob- 

 served when drops were exposed to direct sunlight, as compared 

 to drops in shade. The number of larvae issuing in the tests 

 varied, but not in such manner as to indicate relationship. Thus^ 

 two lots of Porters, each lot with 100 egg punctures, were used 

 in one experiment, one lot being in sun and the other in shade. 

 From the first 67 larvae issued; from the second 94. Again, two 

 lots of Tolman Sweets were used in similar experiment. In this 

 case each lot consisted of 125 apples, and each lot showed a total 

 of 777 punctures. From those in sun 207 larvae issued; from 

 those in shade 139. 



