21 



alike. The increased number of weevils in the plots on the stubble 

 land was evident early in the season. On August 5, when the plants 

 were beginning- to put on squares abundantly, it was found that 43 per 

 cent of the squares were infested in plats 2 and 3, while 36 per cent 



Fig. 4. — Kxperinient showing damage resulting from favorable hibernating quarters. 



in plat 1 and 33 per cent in plat 4 were infested. This greater 

 damage in the case of the cotton planted on the sorghum stubble con- 

 tinued uniformly until late in the season, when a natural overflow of 

 weevils from plats 2 and 3 caused the adjoining plats to be affected to 

 about the same extent. As will be seen from the diagram, the fact 



