6i8 Journal of Agricultural Research voi. xin, no. 12 



We appreciate the effect of individual variation in digestion and the 

 slight variations which are Hkely to occur as a result of making the 

 digestion trials at different times. The trials were made in triplicate, 

 and the time factor was minimized by the method of planning the experi- 

 ment. The slight variations noted are so general that it is hardly con- 

 ceivable that they could in any way be accounted for by the possible 

 errors mentioned. 



CONCLUSIONS 



Aside from the actual digestion coefficients obtained by the feeding of 

 these feeds alone and under the different combinations, a review of the 

 coefficients seems to justify the following conclusions: 



(i) The combining of these feeds in general tends toward lowering the 

 digestibility of the several nutrients of the rations. 



(2) The digestion of corn silage, alfalfa hay, and velvet-bean meal is 

 apparently fairly constant under the different combinations. 



(3) More accurate digestion coefficients are obtained by feeding-alone 

 experiments, where such are possible, rather than by the usual difference 

 method. 



(4) Greater variations are presented in the apparent digestibility of 

 nitrogen and ash than in other nutrients. 



(5) Compared with similar feeds, velvet-bean meal is apparently well 

 digested. 



