U. S. DEPARTMENT OF AGRICULTURE. 

 BUREAU OF PLANT INDUSTRY— BULLETIN No. 63. 



B. T. GALLOWAY, Chief of Bureau. 



INVESTIGATIONS OF RUSTS. 



MARK ALFRED CARLETON, 



Cerealist in Charge of Cereal Investigations. 



VEGETABLE PATHOLOGICAL AND PHYSIOLOGICAL 

 INVESTIGATIONS. 



Issued July 12, 1904. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1901. 



