BUREAU OF PLANT INDUSTRY. 



Chief of Bureau, Beverly T. Galloway. 

 Assistant Chief of Bureau, William A. Taylor. 

 Editor, J. E. Rockwell. 

 Chief Clerk, James E. Jones. 



ADDITIONAL COPIES of this publication 

 A may be procured from the Superintend- 

 ent of Documents, Government Printing 

 Office, Washington, D. C. , at 5 cents per copy 



