U. S. DEPARTMENT OF AGRICULTURE. 



BUREAU OF PLANT INDUSTRY— BULLETIN NO. 213. 



B. T. GALLOWAY, Chief of Bureau. 



CEOWN-GALL OF PLANTS: 

 ITS CAUSE AND REMEDY. 



BY 



ERWIN F. S^IITH, Pathologist in Charge of Laboratory 



OF Plant Pathology, 



NELLIE A. BROWN, Scientific Assistant, 



and 



C. O. TOWNSEND, formerly Pathologist in Charge of 

 Sugar-Beet Investigations. 



Issued February 28, 1911. 



LIBRARV 

 NEW YORX 

 BOTANICAL 



WASHINGTON: 

 government printing office. 



1911. 



