U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF PLANT INDUSTRY, 



B. T. GALLO'.VAY, Chief of Bureau. 



BULLETINS OF THE BUREAU OF PLANT 



INDUSTRY NOS. 173 TO 183, 



INCLUSIVE, 1910. 



V O L U M E XXIII. 



■ 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 1910. 



