New York AGRICULTURAL EXPERIMENT STATION. 279 
from the hay, and it is claimed by some that under such feeding 
the meal will not be as fully digested as when it is fed mixed with 
the hay. The reason given for this is that much of the meal passes 
at once into the fourth stomach or abomasum, and not being remas- 
ticated, as is the coarse fodders, it is not so fully digested. But 
this assumption, which, if correct, might be true for the albumi- 
noids, does not explain the depression of digestibility for the fiber, 
since the small amount of fiber contained in the corn meal would 
not give the difference shown by the two trials. The question as 
to whether the ground feeds shall be fed mixed with the hay, or 
whether each can be fed separately with as good results, is one of ° 
great practical importance in feeding, and in future feeding experi- 
ments we hope to be able to help throw some light upon this 
question. ~_ 
Corn MEAt. 
If we assume the digestibility for the hay in the ration to be the 
same as when fed alone, then we have the necessary data for cal- 
culating the digestibility of the corn meal. In the following table 
we have given the figures obtained by calculation from the previous 
data: | 



| NITROGEN-FREE| Fat (ETHER 
Dry MATTER. |ALBUMINOIDS.|CRUDE FIBER. EXTRACT. KXTRACT). 

Jem. Meg. | Jem. | Meg. | Jem. | Meg. | Jem. Meg. | Jem. | Meg. 









Amount digested, ozs....} 226.493 | 233.007 | 21.210 | 22.402 | 58.157 | 54.850 | 129.685 | 128.117 | 9.413 | .9.681 
Digested from hay, ozs...) 135.941 | 136.815 | 14.226 | 14.084 | 64.003 | 55.817 | 57.141 | 53,276 | 5.265 | 4.958 













Dig. from corn m’l, oz.| 90.552 | 86.192} 6.984! 7.318|...... | ...... 72.544! 74.841 | 4.148 | 4.628 
Per cent digested......... BOGS ial S887) | 66.94 (180.86 cde coool Swkees 85.18 | 89.11 | 86.99 |96.91 
ANVOTA LO ss co slash «et 84.66 | 58.35 | ee olsen ine es | 7.14 91. 


THE AMOUNT OF NITROGEN SUPPLIED AND 
RECOVERED. 
In order that we may know whether the animals were eating a 
maintenance ration or not, we may first consider the absolute 
amount of nitrogen consumed during the period of four days and 
that recovered in the dung, urine and milk for the same time. As 
the previous feeding of the two cows had been the same for several 
days preceding the trial, there can be little error from the amount 
of food consumed. As previously stated, they were fed what 
