Public Document 



No. 31 



THIRTY-FIRST ANNUAL REPORT 



OF THE 



MASSACHUSETTS AGRICULTURAL 

 EXPERIMENT STATION 



Parts I and II 



Being Parts III and IV of the Fifty-sixth Annual Report 

 OF THE Massachusetts Agricultural College 



January, 1919 



Ending the Thirty-sixth Year from the Founding of the State 

 Agricultural Experiment Station 



BOSTON 

 WRIGHT & POTTER PRINTING CO., STATE PRINTERS 

 32 DERNE STREET 

 1919 



