UNITED STATES DEPARTMENT OF AGRICULTURE 
DEPARTMENT BULLETIN No. 1147 
Washington, P. C. T Ed'g.m, 
CHEMICAL, PHYSICAL, AND INSECTICIDAL PROPERTIES 
OF ARSENICALS 
By 
F. C. COOK, Physiological Chemist, Insecticide and Fungicide Laboratory 
Miscellaneous Division, Bureau of Chemistry 
i and 
N. E. McINDOO, Insect Physiologist, Fruit Insect Investigations 
Bureau of Entomology 
CONTENTS 
Purpose of investigation . 1 
Arsenicals studied 1 
Chemical properties of arsenicals 2 
Physical properties of arsenicals 20 
Page 
Comparative toxicity of arsenicals 24 
General properties of arsenicals. . 50 
Summary 53 
Literature cited 55 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1924 
