Public Document No. 31 



TWENTY-NINTH ANNUAL REPOKT 



OF THE 



MASSACHUSETTS AGRICULTURAL 

 EXPERIMENT STATION. 



Parts I. and II., 



Being Parts III. and IV. of the Fifty-fourth Annual Report of 

 THE Massachusetts Agricultural College. 



January, 1917 



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

 Agricultural Experiment Station. 



BOSTON: 



WRIGHT & POTTER PRINTING CO., STATE PRINTERS, 



32 DERNE STREET. 



1917. 



