U. S. DEPARTMENT OF AGRICULTURE. 



BUREAU OF PLANT INDUSTRY— BULLETIN NO. 213. 



B. T. GALLOWAY, Chi^ of Bureau. 



CPiOWN-GALL OF PLANTS: 



rrs CAUSE and remedy. 



BY 



ERWIN F. SMITH, Pathologist in Charge of Laboratory 



OP Plant Pathology, 



NELLIE A. BROWN, Scientific Assistant, 



AND 



C, O. TOWNSEND, formerly Pathologist in Charge of 

 Sugar-Beet Investigations. 



Issued February 28, 1911. 



WASHINGTON: 

 government printing office. 



191L 



