[Cir. 106] 

 2 



BUREAU OF PLANT INDUSTRY. 



Chief of Bureau, Beverly T. Galloway. 

 Assistant Chief of Bureau, Willloi A. Taylor. 

 Editor, J. E. Rockwell. 

 Chief clerk, Jajies E. Jones. 



ADDITIONAL COPIES of this jniblicalion 

 ■^ may be procured from the Superln'Tend- 

 ENT OF Documents, Governnimit Printing 

 Oflice, Washington, D. C. , at 5 cents i)er copy 



