50 BULLETIN 1235, U. S. DEPARTMENT OF AGRICULTURE. 



THE SECOND GENERATION. 



EGGS OP THE SECOND BROOD. 



Time of deposition. — The complete period over which the first 

 brood of moths laid eggs extended over the 91 days beginning July 15 

 and ending October 13, although 12,021 eggs, or 77 per cent of the 

 total number, were deposited during the four weeks beginning 



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Fig. 29. — Time of deposition of eggs of the second brood of the codling moth at Yakima, Wash., 1921. 



July 21 and ending August 16. The greatest number of eggs de- 

 posited in one day was 1,278 on August 7, one of the two dates on 

 which the highest average daily temperature of the year was recorded. 

 Figure 29 gives the time of deposition of 15,527 eggs of the second 

 brood. 



