NITROGEN AND OTHER LOSSES IN ENSILING CORN. 11 
enhanced the first season by the addition of water to the corn at en- 
siling. 
In the season of 1914^15 the change in amount of green matter 
varies from a loss of 4.29 per cent in the weight of bag No. 6 to a gain 
of 27.33 per cent in the weight of bag No. 4. The average gain for 
all bags is 12.35 per cent. The gain for the bags in the upper half 
averages 8.31 per cent and for the lower half, 16.87 per cent. That 
the apparent gain in green matter is only a gain in water which more 
than offsets any loss in dry matter is shown by a comparison, bag by 
bag, of the figures for gain in green matter and moisture. 
In the season of 1915-16, when the corn was somewhat immature 
and no water was added while filling the silo, there is a loss in green 
matter in 5 of the 6 bags. The average loss is 3.09 per cent per bag, 
and the slightly greater loss in the lower than in the upper half prob- 
ably is due to the large loss of juice that took place. The change in 
the amount of moisture present, less than 1 per cent, is comparatively 
unimportant, though it should be noted that the 2 lower bags register 
gains. 
LOSS OF DRY MATTER. 
The greatest loss in dry matter in any bag in 1914-15 is but 18.64 
per cent, while the average loss for all the bags is 8.66 per cent. The 
apparent downwash of the soluble dry matter is illustrated very well 
that season by a comparison of the losses. The bags in the upper and 
lower halves show, respectively, 12.74 per cent and 4.70 per cent losses 
in dry matter. 
In the season of 1915-16 the figures do not, on their face, bear out 
this transfusion, there being an increase in loss from 9.72 per cent 
in the upper half to 13.71 per cent in the lower half. This apparent 
reversal of the results of the previous season may be and probably is 
due to the very much larger outflow of juice. The loss in any indi- 
vidual bag does not run as high as in the previous season, but the 
average percentage loss of dry matter as ensiled is nearly 3 per cent 
more, being 11.29 per cent. 
TOTAL NITROGEN. 
The figures for total nitrogen in 1914-15 show a gain in 5 out of 
8 bags, while in 1915-16 they show a loss in every bag. The fig- 
ures for the first season show very plainly that there must have 
been a downwash of nitrogenous material, for while there is a loss 
of 2.46 per cent in the bags from the top half of the silo, there is a 
gain of 15.19 per cent over the total nitrogen ensiled in the bags 
representing the lower half. The fact that this gain in the lower 
bags raises the average total nitrogen in all the bags may be ac- 
counted for by irregularities in the downwash by which more nitrog- 
enous material was washed into the lower bags than was washed out 
of the upper ones. 
