DIV T^ 



FUMIGATION OF 



ORNAMENTAL GREENHOUSE PLANTS 



WITH HYDROCYANIC-ACID GAS 



E. R. SASSCER 



Collciboralor 

 and 



A. D. BORDEN 



Scientific Assistant 



FARMERS' BULLETIN 880 



UNITED STATES DEPARTMENT OF AGRICULTURE 



Contribution from the Bureau of Entomology 

 L. O. HOWARD, Chief 



Washington, D. C. 



October, 1917 



Show this bulletin to a neighbor. Additional copies may bo obtained free from the 

 Division of Publications, United States Department of Agriculture 



WASHINOTON : OOVERMMENT PRINTINQ OFFICE t ISIT 



