Public Docunient No. 31 



TWENTY-SECOND ANNUAL EEPORT 



OF THE 



MASSACHUSETTS AGRICULTURAL 

 EXPERIMENT STATION. 



Tart I., 



Being Part III. of the Foi;ty-sevEx\th Annual ItErouT 

 OF THE Massachusetts Agricultural College. 



January, 1910. 



BOSTON: 



WRIGHT & POTTER PRINTING CO., STATE PRINTERS, 



18 Post Office Square. 



1910. 



