Bulletin No. 24. v p. p.— 77. 



U. S. DEPARTMENT OF AGRICULTURE, 



DIVISION OF VEGETABLE PHYSIOLOGY AND PATHOLOGY. 

 B. T. GALLOWAY, Chief. 



THE BASIS FOR THE IMPROVEMENT 

 OF AMERICAN WHEATS. 



BY 



MARK ALFRED CARLETON, 

 Cerealist, Division of Vegetable Physiology and Pathology. 



Issued December 10, 1900. 



WASHINGTON : 



GOVERNMENT PRINTING OFFICE. 

 I 900. 



