PROCEEDINGS, 1918 15 



FURTHER NOTES ON THE APPLE MAGGOT (1918) 

 (Rhagoletis pom one I la Walsh) 



By W. H. Brittain. 



Emergence of Adults. 



Further miscellaneous notes on the apple maggot were 

 made during the season of 1918, supplementing the work of 

 previous years. Table No. 1 shows the emergence of the 

 adults for the season. This emergence represents about sev- 

 enty per cent, of the total, since it has been shown in previous 

 experiments that thirty per cent, do not emerge until the second 

 year. 



TABLE NO. 1. 



EMERGENCE OF ADULTS IN 1918 FROM OUT OF 



DOOR CAGES. 



Weather Records. 



''July 14th to 22nd, no separate record was taken of the sex 



