( cxi ) 



Experiment 3. — Pupated 28 Aug. to 6 Sept. Left in room till 13 Jan. 

 (19 weeks), then placed out of doors, and theuce transferred to 

 incubators at 80°-92° F. (27°-33° C.) in lots at intervals. 



The results of the above three experiments may be compared with 

 Prof. Weismann's experience (Neue Yersuche), where of 120 A. levana 

 pupae placed on the 10 Jan. at the temperature of 27°-30° C, 30 emerged 

 at different dates between 18 Jan. and 25 Feb. 



