Public Document No. 31 



TWENTY-FOURTH ANNUAL REPORT 



OF THE 



Massachusehs agricultural 

 Experiment Station. 



Part I., 



Being Pakt III. of the Forty -ninth Annuai, Report of the 

 Massachusetts Agricultural College. 



January, 191,2. 



BOSTON: 



WEIGHT & POTTEE PEPNTING CO., STATE PEINTEES, 



18 Post Office Squaee. 



1912. 



