84 



HATCH EXPERIMENT STATION. 



[Jan. 



tion disturbances, which would certainly have become quite 

 pronounced had the feeding been continued much longer. 

 The digestibility of the two difl'erent samples of cotton-seed 

 feed was practically the same. The North Carolina station 

 has made a very extended study of the digestibility of hulls 

 and meal fed in different proportions. The Pennsylvania 

 station has also made three single determinations. These 

 results, in addition to our own, are tabulated below : — 



Digestion Coefficients. 



\Ci-s 





Si2 





Massachusetts station, . 

 North Carolina station, , 

 North Carolina station, , 

 North Carolina station, . 

 Pennsylvania station, 



Hay of mixed grasses with ten per cent, 

 protein for comparison. 



4-1 



6-1 



3-1 



IH 



5-1 



The experiments made by the North Carolina station 

 (4-1) and by the Pennsylvania station were carried out 

 with steers. The only diiference between the results ob- 

 tained by the Massachusetts station and those recorded by 

 the North Carolina station (4-1) consists in the higher per- 

 centage of protein and the lower percentage of tibre digested 

 by the steers in the North Carolina experiments. The co- 

 efficients for fat digestibility also show some variation, but, 

 the fat percentage being comparatively small, the difi'erence 

 is not of so much account. The coefficients obtained by 

 Armsby are lower than would be expected. The coefficients 

 of digestibility for an extra quality of hay are not very 

 noticeably higher — excepting the protein — than those for 

 the cotton-seed feed. 



According to the average coefficients of digestibility, a 

 ton of the hay and a ton of the cotton-seed feed fed in the 



