172 



E. W. SEYSTER. 



Experiments 4.1 and 4.2 (Tables V., VI., VII., VIII.). Part 

 of the offspring of experiment 4 which developed at different 

 temperatures, was used as parents in similar experiments, only 

 here flies developing at the room temperature were not used. 



TABLE VI. 



EXPERIMENT 4. i. FEMALES. 



TABLE VII. 



EXPERIMENT 4. 2. MALES. 



TABLE VIII. 



EXPERIMENT 4. 2. FEMALES. 



The results obtained from all four sets are analogous to those 

 obtained from experiment four. The results from the above 

 experiments indicate that the temperature at which the parents 



1 Development at room temperature for one and one half days. 



