Bui. 50, Bureau of Entomolog'y, U. S. Dept. of Agriculture. 



Plate XXIV. 



Fig. 1.— Poison "Blower" Formerly Much Used in Destroying Cotton 

 Caterpillars, Useful Against Bollworms (Original). 



Fig. 2.— Machine Used in Collecting Bollworms from Cotton Plants (Original). 



