UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 1027 
Contribution from the Bureau of Chemistry 
W. G. CAMPBELL, Acting Chief f 
Washington, D. C. T April 17, 1922 
POISONOUS METALS ON SPRAYED 
* FRUITS AND VEGETABLES 
BY 
W. D. LYNCH, Assistant Chemist, C. C. McDONNELL, Chief, Insecticide 
and Fungicide Laboratory, and J. K. HAYWOOD, Chief, Miscellaneous 
Division, Bureau of Chemistry; A. L. QUAINT ANCE, Entomologist in 
Charge, fruit Investigations, Bureau of Entomology; and M. B. WAITE, 
Pathologist in Charge, Fruit-Disease Investigations, Bureau of Plant 
Industry 
CONTENTS 
Page 
Purpose of Investigation 1 
Results of Previous Investigations 1 
Experimental Work . ■ 16 
Results of Experimental Work . .18 
Summary 58 
Literature Cited 58 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1922 
