Smithsonian Report, 1958.—Knipling PLATE 5 
SPL OL A Ta 
1. Flies emerge from irradiated pupae in paper boxes, and when ready for release are loaded 
in the airplane for distribution. 
4 
ae 
2. A box containing 400 to 500 flies is forced into a chute in the airplane. A special device 
opens the box and releases flies at intervals of about one mile. 
