U. S. DEPARTMENT OE AGRICULTURE. 



BUREAU OF PLANT INDUSTRY BULLETIN No. 63. 



B. T. G.VLLOWAY. CMe/ »/ lliirmu. 



INVESTIGATIONS OF RUSTS, 



BY 



•MARK ALFRED CARLETON, 

 Cekealist in Charge of Cereal Investigations. 



VEGETABLE PATHOLOGICAL AND PHYSIOLOGICAL 

 INVESTIGATIONS. 



Issued July 12, 1904. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 1904. 



