"61 



N No. 16. T. P. r.-G6. 



U. S. DEPARTMENT OF AGRICULTURE. 



DIVISION OF VEGETABLE PHYSIOLOGY AND PATHOLOGY. 



\<i 



Cereal Rusts of the United States: 



A PHYSIOLOGICAL INVLSTIGATION. 



BY 



MARK ALFRED CARLETON. 

 ASSISTANT, DIVISION OF VEGETABLE PHYSIOLOGY AND PATHOLOGY. 



Issued September 27, 1899. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE 

 1899. 



