112 MASS. EXPERIMENT STATION BULLETIN 152. 



ings. The two lots used in the present experiments were quite 

 similar in appearance and chemical composition, and were free 

 from an excessive amount of straw and chaff. In the first 

 sample the following seeds and ingredients were identified: 

 light oats, oat hulls, wheat, wheat refuse, smutted grain, yellow 

 foxtail, green foxtail, corn cockle, bindweed, flax, lady's-thumb, 

 charlock, wild mustard, rape, lamb's-quarters, large smartweed, 

 chaff of various sorts, wild sunflower, pigweed, timothy, 

 shepherd's-purse, chess, oat grass, wild oats, rye and corn, to- 

 gether with a few unidentified seeds. Screenings are found in 

 the eastern markets principally as an ingredient of molasses 

 feeds. Both lots were coarsely ground before feeding. 



Stminiary of Coefficients, Wheat Screenings, Series XVII., Period IV. 



{Lot I.). 



Summary of Coefficients, Wheat Screenings, Series XVII., Period X. 



{Lot II.). 



The difference shown in the digestibility of the two lots can 

 probably be accounted for by the fact that the first lot con- 

 tained more fiber and less nitrogen-free extract than did the 

 second. In both trials the fiber coefficient showed that slightly 

 less fiber was digested than when the hay was fed alone, indi- 

 cating somewhat of a depressing effect of the wheat screenings 

 upon fiber digestibility, and also that the fiber contained in the 

 screenings was of decidedly inferior character. The screenings 



