U. S. DEPARTMENT OF AGRICULTURE. 



BUREAU OF PLANT INDUSTRY-BULLETIN No. 41. 



B. T. GALLOWAY, Chief qf Bureau. 



AL GRADING OF UN. 



BY 



RARY 

 CARL 8. SCOFIELD, 

 Expert, Grain Investigations. 



BOTANICAL. INVESTIGATIONS AND EXPERIMENTS. 



Issued June 13, 1903. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 1903. 



