HOUSE-FLY I^'VKSTIGATIUKS. 463 



Conclusions. 



The four batches of the House-fly show that the higher 

 temperature hastens development — 38° C. appears to be the 

 maximum, the maggots cannot endure 40° C., and Blow-fly 

 maggots perish at 38'"^ C. 



The experiments serve only to confirm records previously 

 published . 



The enquiry closed at the end of September, so that within a 

 month there was no opportunity of repeating and checking the 

 Blow-fly results, nor of observing hibernating habits with the 

 approach of winter. 



It is interesting to note that the Blow-fly will breed together 

 with the House-fly in the mixture of bread, casein, sugar, and 

 banana, and it would be worth while following the investigations 

 through the winter with a view to clearing up points connected 

 with hibernation, etc. 



