422 
SUZUKI ; 
Here also it is seen that the increase of asparagine nitrogen 
is accompanied with the decrease of nitrates in the plants, and 
that in this case the asparagine is not a decomposition product of 
proteids. 
The relation of these numbers will become still clearer, if 
we add the following table :— 
Table XIX. In ioo parts of total nitrogen. 
Plants treated with 
Total nitrogen 
Original 
plants 
IOO 
Control 
plants 
IOO 
Ammonium 
chloride 
iooT) 
Sodium 
nitrate 
loot 1 ) 
Albuminoid nitrogen 
35-9 
36.7 
42.9 
322 
Asparagine nitrogen 
69 
16.0 
20.0 
22.5 
Nitrogen in nitrates 
22.7 
8.1 
14-3 
21.0 
III. Experiment. 
Here, the influence of sugar and that of temperature upon 
the result was to be observed. The plants were taken from the 
same farm as before, and placed in glass cylinders, containing 
each 500 c,Ci 
of the following solutions :— 
^a. 
10% solution of sugar. 
b. 
0.2% ,, ,, ammonium chloride. 
c * 
y y y y y y y y y y 
and 
< 
d. 
,, ,, ,, sodium nitrate. 
e. 
y y y y y y y y y y 
and 
T 
distilled water. 
ig. 
\ 0 % sugar solution. 
\h. 
distilled water. 
a, b, c, d, e, f, were kept in the glass house, while g, and h, 
were kept in the laboratory, where the temperature was much 
lower than in the glass house. (2) 
Duration of experiment, 8 days (Dec. ioth—18th). 
Temperature in the glass house :—Min. i°C ; Max. 38°C. 
,, ,, ,, laboratory :—Min. 5°C ; Max. I5°C. 
Plants treated 
Ammonium 
Ammonium chloride 
Sodium 
Sodium nitrate 
with 
chloride 
and sugar 
nitrate 
and sugar 
Total nitrogen absorbed 
in grams 
0.042 
0.038 
0.041 
0.037 
Percentage of absorbed 
- 
nitrogen in the dry 
0 - 53 % 
0-31% 
°- 54 % 
0 - 34 % 
matter^®) 
(1) The nitrogen 
absorbed durir 
ig experiments was 
subtracted 
from the total 
nitrogen and the remaining number ( = total N. before expei'iment) was calculated as ioo. 
(2) Toward the end of the experiment, the plants kept in the sugar solution in the 
glass house began to suffer. The top of the leaves, dried and turned yellow, but those 
kept in the cooler laboratory remained healthy. 
(3) Total dry matter of the plants treated with ammonium chloride = 7.901 grams. 
,, „ „ „ sodium nitrate = 7.619 „ 
„ „ „ ammonium chloride and sugar = 12.393 „ 
„ ,, „ sodium nitrate and sugar = 10 936 „ 
