Dec. 15, 1925 
Nitrogen Metabolism in Etiolated Corn Seedlings 
1159 
Table V .—Partition of the water-soluble nitrogen in the various 
[Results expressed in percentage of the water-soluble nitrogen of the seedlings] 
No. 
10 
Conditions of germination 
Dura¬ 
tion 
Days 
2 
2 
Substratum 
Paper_ 
_do- 
Average. 
Paper. 
do. 
Average. 
Paper_ 
_do_ 
Average- 
Paper_ 
_do_ 
Average- 
Paper. 
—..do. 
Average. 
Paper. 
....do. 
Average. 
Paper. 
_do. 
Average . 
Ungerminated 
_do.. 
Average. 
Tern 
pera- 
ture 
o 
30 
30 
Treat¬ 
ment 
None. 
... dol 
Acid- 
amide 
nitrogen 
Per cent 
11.96 
10.91 
11.44 
Humin 
nitrogen 
Per cent 
19.49 
19.53 
19.51 
None. 
...do.. 
None. 
..do.. 
Uspulun. 
...do_ 
Uspulun. 
..do.. 
Uspulun. 
..do_ 
16.21 
14.91 
15.56 
18.90 
18.49 
18.70 
13.90 
14.32 
14.11 
18.32 
17.83 
18.08 
17.87 
17.70 
17.79 
Uspulun.. 
16.71 
18.45 
17.58 
11.47 
11.78 
11.63 
12.27 
12.27 
10.52 
10.52 
8.57 
8.57 
6.54 
6.35 
6.45 
9.22 
8.35 
8.78 
7.06 
7.33 
7.20 
26.81 
16.58 
21.70 
Amino 
nitrogen 
Per cent 
19.26 
22.39 
20.83 
Peptide 
nitrogen 
27.43 
28.20 
27.82 
28.06 
28.51 
28.29 
28.89 
30.21 
29.55 
31.70 
30.24 
30.97 
31.86 
31.18 
31.52 
9.53 
9.51 
9.52 
Per cent 
34.78 
33.35 
34.06 
28.75 
24.79 
26.77 
34.52 
34.52 
29.52 
25.52 
27.52 
25.98 
26.35 
26.17 
20.98 
19.39 
20.19 
35.03 
35.03 
Residual 
nitrogen 
Per cent 
14.16 
17.58 
14.51 
18.40 
16.29 
23.50 
22.12 
[Results expressed in percentage of the total nitrogen of the seedlings] 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
Paper_ 
....do_ 
30 
30 
None ... 
...do_ 
2.98 
2.72 
4.86 
4.87 
4.80 
5.58 
8.67 
8.31 
Average_ . 
Paper_ 
_do_ 
Average_ 
Paper__ 
2.85 
4.87 
5.19 
8.49 
3.53 
30 
30 
None_ 
...do- 
6.42 
5.91 
4.86 
10.87 
11.17 
11.39 
9.82 
6.17 
4.86 
11.02 
10.61 
6.97 
30 
30 
None_ 
8.55 
8.36 
4.76 
_do __ 
..do _ 
Average _ 
8.46 
4.76 
Paper_ . . 
_do . _ 
25 
25 
Uspulun.. 
5.39 
5.55 
3.32 
10.87 
11.05 
13.38 
Average_ ... 
Paper_ 
_do_ 
Average_ 
5.47 
3.32 
10.96 
13.38 
5.62 
25 
25 
Uspulun — 
8.61 
8.38 
3.08 
2.99 
13.59 
14.21 
13.88 
12.00 
1 
8.50 
3.04 
13.90 
12.94 
8.65 
