19 
The dried blood underwent bacterial decomposition for seven days 
and 45.19 per cent of the nitrogen was ammonified. The amid nitro- 
gen decreased from 9.09 per cent to 4.95 per cent of the total nitrogen, 
the basic nitrogen from 18.64 per cent to 8.06 per cent, and the non- 
basic nitrogen from 72.26 per cent to 41.76 per cent. Calculating the 
percentages of decomposition in the different groups we find that 
45.53 per cent of the amid nitrogen, 56.75 per cent of the basic 
nitrogen, and 42.17 per cent of the nonbasic nitrogen were ammonified. 
These data show that the basic diamino acids were decomposed more 
rapidly than the other groups. The organic nitrogen remaining after 
the bacterial action was composed of 9.04 per cent amid, 14.71 per 
cent basic, and 76.25 per cent nonbasic nitrogen compounds, as com- 
pared with 9.09 per cent amid, 18.64 per cent basic, and 72.26 per 
cent nonbasic nitrogen in the original dried blood. 
SOY BEAN CAKE MEAL. 
The bacterial decomposition of this material took place for five 
days, with the results as given below: 
Nitrogen content of soy bean cake meal and its bacterial decomposition products. 
Per cent of original 
material. 
Per cent of total N. 
Per cent of 
groups de- 
composed. 
Per cent of 
organic N 
after bacte- 
rial action. 
Before. 
After. 
Before. | After. 
Ammonia N 
4.10 
.69 
.24 
3.25 
49.52 
AmidN 
1.24 
.76 
6.28 
14.97 
9.18 
75.84 
8.33 
2.89 
39.25 
43.06 
67.10 
48.25 
16.51 
Basic N 
5.74 
Nonbasic N 
77.75 
The above table shows that 49.52 per cent of the total nitrogen 
was ammonified. The amid nitrogen decreased from 14.97 per cent 
to 8.33 per cent of the total, the basic diamino acids from 9.18 per 
cent to 2.89 per cent, and the nonbasic nitrogen from 75.84 per cent 
to 39.25 per cent. Expressed in percentages of decomposition it is 
found that 43.06 per cent of the amid nitrogen, 67.10 per cent of the 
basic nitrogen, and 48.25 per cent of the nonbasic nitrogen were 
ammonified. The organic nitrogen remaining was composed of 
16.51 per cent amid, 5.74 per cent basic, and 77.75 per cent nonbasic 
nitrogen compounds, as compared with 14.97 per cent amid, 9.18 
per cent basic, and 75.84 per cent nonbasic nitrogen in the original 
material. 
