67 



Turning to Mr. Gillette's criticism in the Entomological News for 

 June. 1902, page 11*4, I find this statement: 



In Mr. Washburn's table he places the beginning of e^g hatching for the first 

 brood of moths June 21, for the second brood August 29, and for the third Novem- 

 ber 6, and the fourth he does not give, but figured like the others it would come 

 January 15, and the larvae would not mature before the first week in February. As 

 these dates are to mark the appearance of the brood, the last brood would come much 

 later. 



This statement is either very ambiguous, or Mr. Gillette quite mis- 

 understands the table, for I meant to convey the information that the 

 first brood of moths appeared June 1 or earlier. 



Referring to the table under discussion, it is to be noted that moths 

 brought me from the apple room on June 20 and referred to in 

 column "B' 1 as brood No. 2 were undoubtedly the latter part of 

 brood No. 1, this first brood running from May 16 (since early 

 moths appeared May 16) to June 20; hence columns "A" and * ; B" 

 represent the . first brood only, and they are naturally followed by 

 "C" and "D." In this way the table works out all right, but for 

 two complete broods and a possible third, not for the fourth. 



Mr. Cordley's conclusions in 1898 regarding the efficacy of spraying 

 before June 11 tallies exactly with mine, as well as his observations as 

 to the extreme injury caused later in the season. His notes also as 

 to egg hatching and larvae affecting the apples (rarely before June 25) 

 are practically identical with mine. 



In conclusion I will sa.y that this short paper is not, as is very evi- 

 dent, an attempt to justify my reports in the Oregon bulletin, No. 25, 

 nor is it in any way a criticism upon the most thorough work done by 

 Mr. Cordley. I have ventured to present it with the intention of 

 publicly placing the correct interpretation upon the table published in 

 1893 and wrongfully interpreted at that time. It seems to me that 

 the number of broods of the codling moth in western Oregon is still 

 to be regarded as a matter of some doubt. 



A discussion of Mr. Simpson's paper followed. 



Mr. Washburn inquired of Mr. Simpson if there were but two 

 broods of the codling moth in western Oregon, and also desired to 

 know the significance of finding a moth as late as November 15. 



Mr. Simpson replied that the codling moth varied as much as five 

 weeks in coming out in the spring. He thought the finding of a moth 

 as late as November 15 would not indicate a third brood. Two gener- 

 ations could be accounted for. but the moths of a given generation do 

 not all come out at the same time. Some may come out five weeks 

 earlier than others in the spring. 



