Appendi. 



129 



that as the temperature raises above that point the activity of the moths 

 increase. I have never seen eggs of the codling moth out of doors here 

 in May. A glance at the table will show that very rarely indeed does the 

 evening temperature reach sixty degrees during that month. The average 

 for the month is only fifty-three degrees. Egg laying, as shown above, 

 ordinarily begins about the middle of June and becomes general towards 

 the close. The average evening temperature for June is just sixty degrees, 

 and rarely does it go above sixty-five degrees. It is also continued during 

 the first part of July, but since the emergence of but few moths of the first 

 brood is delayed until the latter part of July, and but few of the second 

 bi ood emerge so soon, the temperature of the latter part of July need not 

 be considered. A very large proportion of the total injury done by the 

 moth in the state occurs during August and the first part of September, 

 when the average evening temperature is highest. During this time a con- 

 siderable number of evenings occur with a temperature of seventy to 

 eighty-five degrees. 



TABU-: SIIOWIXG DAILY TEMPEUATUUE AT 8 P. M. FROM MAY 1 TO OCTOHEK 1 FOR 

 THE YEARS 1898, 1899, 1900 AND 1901. 



