October, '19] 



PETERSON: APHID EGGS 



369 



Table I. PERCENTAOEa of Hatch (Selected Eggs op A. avbn« Kept Out-of-Doors) When Eggs 

 WERE Coated with Coktact Sprays on December 7, 1918, January 9, February 10, March 1, 

 March 10 and March 21. 1919 (200-300 Eggs in Each Trial) 



■Sprayed March 18. 1919. 



