84 



THE EEPOET OF THE 



Xo. 36 



TABLE No. 1. 



Year. 



Duration of Incubation of 1st Generation Eggs. 



1917 

 1917 

 1917 



In experiments with 40 lots of 2nd, 3rd and 4tii generation eggs, the average 

 duration of the egg stage proved to be 111/2 days in June, 7% days in July, 10 

 days in August, and I21/2 days in September. (See Table No. 2). 



TABLE No. 2. 



