420 SUZUKI ; 
Table XV. In ioo parts of dry matter :— 
Plants treated with 
Original 
Control 
Ammonium 
Ammonium 
Sodium 
plants. 
plants. 
nitrate. 
carbonate. 
nitrate. 
Asparagine nitrogen 
0.65 
I. 5 I 
1.69 
1.69 
2.04 
Asparagine 
3-07 
7- 1 1 
7-99 
7-97 
9.62 
Here, in tlie control plants, very much asparagine was 
formed, this can only be due to the transformation of nitrates, 
originally stored up in the plants, aided by the presence of much 
sugar. Indeed in a second experiment the decrease of nitrates 
stored up was plainly observed during this asparagine produc¬ 
tion ; and in this case even less asparagine was noticed in the 
plants nourished with ammonium salts. In these experiments, 
five plants of similar size, (1) were placed in the following solu¬ 
tions :— 
a , o. i% solution of ammonium chloride (1.5 litre). 
b, ,, ,, ,, ammonium phosphate (1.5 litre). 
Cy 0.2% ,, y y sodium nitrate ( ,, ). 
dy distille d water. ( ,, ). 
They were kept in the glass house. 
Time of experiments :—7 days (Nov. 6-13). 
Temperature :—Min. 7°c.; Max. 30 °c. 
After drying (2) only the healthy stems and leaves were ana¬ 
lyzed, with the following results. 
Table XVI. In 100 parts of dry matter: 
Plants treated with 
Original 
Control 
Ammonium 
Ammonium 
Sodium 
plants. 
plants. 
chloride. 
phosphate. 
nitrate. 
Asparagine nitrogen 0.55 
1.47 
1.25 
IIS 
1.11 
Asparagine 2.57 
6.92 
5 - 9 ° 
540 
5 21 
Nitrogen in nitrates. 0.83 
0.41 
— 
— 
— 
(c). Experiments with Brassica campestris , 
var. “ Taina .” (3) 
Three experiments were made with this variety. 
I. Experiment (made on the field). 
The young plants growing on the farm about 20 cm ‘ high were 
irrigated with the following solutions :— 
(1) The roots weighed 200 grams on an average; the leaves were 30-50 cm. long. 
(2) At the end of the experiments the plants in sodium nitrate and ammonium 
phosphate began to suffer. The other plants were quite healthy. 
(3) This variety has very soft juicy leaves and very small roots. 
