ICir. 101] 

 2 



BUREAU OF PLANT INDUSTRY, 



Chief of Bureau, Beverly T. Galloway. 

 Assistant Chief of Bureau, Willl\m A. Taylor. 

 Editor, J. E. Rockwell. 

 Chief Clerk, James E.Jones. 



ADDITIONAL COPIES of this publication 

 -Ti- may be procured from the Superintend- 

 ent OF Documents, Government Printing 

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



