SB 

 C57? 



Issued Mny 21, 1'.'13. 



U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF ENTOMOLOGY -CIRCULAR No. 173. 



L. O. HOWARD. Entomologist and Chief of Bureau. 



ARSENATE OF LEAD AS AN INSECTICIDE 

 AGAINST THE TOBACCO HORNWORMS. 



\, 



BY 



A. C. MORGAN and D. C. PARMAN, 



Entomological Assistants. 



,„ . „ ,_ WASHINGTON : GOVERNMENT PRINTING OFFICE ; Ktl 



86547° — 13 



