Public Document No. 31 



TWENTY-SECOND ANNUAL KEPOKT 



OF THE 



MASSACHUSETTS AGRICULTURAL 

 EXPERIMENT STATION. 



Part I., 



Being Part III. of the Forty-seventh Annual Keport 

 OF THE Massachusetts Agricultural College. 



Januaiiy, 1910. 



BOSTON: 



WEIGHT & POTTER PRINTING CO., STATE PRINTERS, 



18 Post Office Squake. 



1910. 



