Issued September 27, 191U. 



U. ,S. DEPARTMENT OF ACxRICULTURE, 



BUREAU OF PLANT INDUSTRY— Circular No. 65. 



B. T. GALLOWAY, Chief of Bureau. 



GRAPE-SPRAYING EXPERIMENTS IN 

 MICHIGAN IN 1909. 



LIBRARY 



NEW YORK 



BOTANICAU 

 ^^ QAROeiS. 



LON A. HAWKINS, 

 Scientific Assistant, Fruit-Disease Investigations. 



504 1 20 10 WASHINGTON : GOVERNMENT PRINTING OFFrCE : 1910 



