NITROGEN AND OTHER LOSSES IN ENSILING CORN. 13 
FURFUROL. 
The furfurol-yielding bodies show a loss in both seasons, in 1914-15, 
17.07 per cent ; in 1915-16, 13.68 per cent. Like the albuminoids they 
show a smaller loss in the lower than in the upper bags. 
ETHER EXTRACT AND CRUDE FIBER. 
The ether extract and crude fiber were determined only for the 
season 1914r-15. The former shows an average gain for all bags of 
32.59 per cent, this gain being slightly greater in the upper four bags 
than in the lower four. This consistent increase, which is quite in 
harmony with the results of previous investigators, is, no doubt, due 
to the formation of new ether-soluble bodies during the fermentation 
process. 
The crude fiber shows an average loss of 6.34 per cent of its weight 
at ensiling. Like the albuminoids and furfurol it shows a smaller 
loss in the lower than in the upper bags. The lower bags lost an 
average of 2.26 per cent, while the upper bags lost an average of 
10.29 per cent. 
COLLECTION AND ANALYSIS OF JUICE. 
The total amount of juice collected during the season of 1914-15 
was only about one-quarter as much as that collected in the follow- 
ing season. This is doubtless attributable to the condition of the 
corn at ensiling, which in the former season had become so mature 
that water had to be added, and in the latter season was rather too 
immature. 
An inspection of the table giving the analyses of the juice for 
1915-16 shows that the amount of the solids, as indicated by the 
specific gravity, the acidity, and the nonalbuminoid nitrogen, seems 
to follow the same general curve. There appears to be a gradual rise 
during the first part of the period of juice collection, followed by a 
gradual fall. The only exception seems to be the albuminoid nitro- 
gen, which, while showing a slight tendency to follow the specific 
gravity curve, in amount shows a gradual but continuous decrease 
from the first sample taken to the last. In percentage it decreases 
from over one-fourth of the total nitrogen to less than one-nineteenth. 
AMMONIA NITROGEN AND AMINO NITROGEN. 
In the season of 1914—15 the bags contained an average of 257 
parts per million of ammonia nitrogen and 1,540 parts per million 
of amino nitrogen. In the season of 1915-16 the bags contained an 
average of 228 parts per million of ammonia nitrogen and 1,313 
parts per million of amino nitrogen. By calculation it is found 
that in both seasons the ratio of ammonia nitrogen to amino nitrogen 
is slightly greater in the bags in the lower half than in those in the 
