108 MASS. EXPERIMENT STATION BULLETIN 152. 



5. Discussion of Results. 

 Owing to the fact that a number of the tests were repeated 

 in a series following, the coefficients secured for each feed in the 

 several series are brought together and discussed below. 



English Hay. 

 But two different lots of hay were used in all of these experi- 

 ments. It consisted ^of mixed grasses with June grass {Poa 

 pratensis) predominating; cut while in blossom, well cured and 

 in good condition. Before feeding it was cut fine by running it 

 through a feed cutter, and thoroughly mixed to insure uni- 

 formity through the entire lot. 



Summary of Coefficients, English Hay, Series XVI., Period I.; Series 

 XVIL, Periods I. and VI 1 1.; Series XV III., Period I. 



The first lot of hay was somewhat less digestible than was the 

 second lot, probably due to the stage of growth at time of cut- 

 ting. The digestion coefficients compare quite closely with 

 those obtained in previous experiments with similar hay. 



