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with the samples incubated for dif- 
ferent periods of time. The maxi- 
mum increase in noncoagulable ni- 
trogen, which occurred in the sam- 
ple incubated for 100 days, amounts 
to 3.184 per cent, while the corre- 
sponding increases in total soluble 
nitrogen amount to only 1.005 per 
cent, so that the transformation of 
insoluble muscle protein into solu- 
ble forms w T as only about one-third 
as great as the change of soluble 
coagulable protein into noncoagu- 
lable forms. 
Proteose nitrogen. — There is a 
comparatively small amount of 
proteose nitrogen present in any of 
the samples. The most rapid in- 
crease in this constituent took place 
in the sample incubated 7 days, 
while the sample incubated 64 days 
shows the greatest increase. The 
sample incubated 100 clays contains 
less proteose nitrogen than that in- 
cubated 7 days. 
Amino nitrogen. — The changes 
in amino nitrogen will be discussed 
in connection with Table 10, where 
they are shown more clearly. 
Phosphorus compounds. — The 
changes in the soluble phosphorus 
compounds will be discussed in con- 
nection with Table 11, for reasons 
that have already been indicated. 
Table 10 shows the distribution 
of nitrogen and phosphorus com- 
pounds in the various samples re- 
ferred to 100 parts of each constit- 
uent in the fresh material. 
Total nitrogen. — As has been pre- 
viously noted, there are some slight 
and irregular changes in this con- 
stituent, which are apparently 
without significance. 
