52 



MISCELLANEOUS PAPEES. 



egg room or the fruit room. In the same way parasite pupse were 

 also phiced in cold storage. In the egg room the temperature is 

 kept at 31° F. and the air is dry, while in the fruit room, while the 

 temperature is the same, the air is rather moist. 



From these experiments it seems that the parasitized prepupse 

 are able to stand exposure in cold storage for at least 41 days, and 

 when removed at the end of that time the parasites will change to 

 pupae. 



Likewise, when parasite pupae are placed in cold storage, the 

 period of emergence of the adult may be retarded for a time until 

 conditions are more favorable for its propagation. In these experi- 

 ments pupse were left in cold storage for 41 days and then put in a 

 cool greenhouse and in 79 days the adults began to emerge. 



The methods of shipping insects and placing them in cold storage 

 just described are at the most very imperfectly worked out, and it 

 is purposed to experiment along these Imes until the behavior under 

 these conditions shall be as completely known as is necessary. 



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 -^ may be procured from the Superintend- 

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