Bui. 103, Bureau of Entomology, U. S. Dept. of Agriculture. 
Plate XII. 
Fig. 1.— Out-of-Door House Used in Life-History Work. (Original. 
Fig. 2.— Soil Cages Used in Obtaining Data on Life of Insect in Ground. ^Original.) 
METHODS OF STUDY IN PLUM CURCULIO INVESTIGATION, 
BARNESVILLE, GA. 
