PLATE II 



Fig. 10. — Large Cage used for the study of army worms and white grubs. (Pholo by J. J. Davis) 

 Fig. 1 L — Flower pots used to get eggs and records of individual pairs of white grubs. (Photo by J. J. Davis) 

 Fig. 12.— Tin salve boxes in a tray used for studying the habits of growth ot white grubs. {Photo by 

 J.J. Davis). Fig. 1.?. — A White grub in a Salve box. (PhotobyJ.J. Davis). F"ig. 14.— Tin tray used 

 in white grub investigation. (Photoby J. J.Davis). Fig. 15.^A battery jar aquarium for aquatic larvae. 

 Fig. 16. — A Root cage (.'l/Zer Comstock). Fig. 17. — A Root Cage (..\tter Comslock). Fig. 18. — A large 



Cage used to study the cabbage root maggot (after Slinxerland). Fig. 19. — A handy insect cage, three 



sides and top covered with copper wire screen and the door of glass. (Pholo by Dr. Matheson), 



