12 BULLETIN 953, U. S. DEPARTMENT OF AGRICULTURE. 
In 1915-16 the average figures for total nitrogen show a loss of 
7.31 per cent, with almost exactly the same losses for the upper and 
lower bags. If it were not for the unaccountably high loss of nitro- 
gen in bag No. 3, the losses for the bags in the lower half would be 
less than those in the upper half. However, even considering the 
figure for bag No. 3 as normal, the large loss of nitrogen in the juice 
would supply a reason why the average figures for total nitrogen 
show no differences between the bottom and top halves of the silo. 
The average losses in total nitrogen in all bags for both seasons are 
very moderate when compared with the results of other investi- 
gators. 
The smallest loss in albuminoid nitrogen for either season is 34.15 
per cent, the largest 64.01 per cent, which also occurs in the same 
season. The average total loss for 1914-15 is 50.76 per cent and for 
1915-16 57.27 per cent. The slightly greater loss in albuminoid 
nitrogen in the latter season may or may not be due to the less 
mature condition of the corn when ensiled. 
The nonalbuminoid nitrogen is, of course, very small in amount in 
the corn when ensiled, but increases several times its own weight 
during ensiling in both seasons. The increase is 270.36 per cent the 
first season and 231.79 per cent the second season. 
ASH. 
The figures for loss or gain in ash for both seasons show very 
plainly the transfusion from the upper half to the lower half of the 
silo. In 1914—15, 2 of the 4 upper bags gained slightly and the other 
2 lost strongly, while all 4 bottom bags gained strongly and consist- 
ently. The average for the top bags shows a loss of 8.96 per cent 
and for the bottom bags a gain of 17.61 per cent. The total aver- 
age gain of 2.07 per cent may be explained in the same way as the 
gain in total nitrogen. The figures for 1915-16, while showing losses 
throughout, show plainly that less ash is lost from the bottom bags 
than from the top bags. The loss for the top bags was 10.43 per 
cent and for the bottom bags only 2.16 per cent, which latter would 
probably have been a gain had no juice escaped. 
SUGARS. 
The sugars, as has been shown by previous investigators, are the 
source of much of the actual weight loss of dry matter during en- 
siling. In both years the nonreducing sugars entirely disappeared 
and only about 6 per cent of the reducing sugars was left. The loss 
is slightly greater in the lower bags than in the upper. This is prob- 
ably due to the fact that fermentation has had a longer time to act 
on the sugars that remain after the first period of rapid action has 
taken place. 
