FORMATION OF ASPARAGINE IN PLANTS. 
413 
Time of experiments (duration). Sept. 19th—Oct. 8th. 
Beginning of germination. Sept. 24th. 
Solution applied. Oct. 2nd—Oct. 8th. 
Temperature in the glass house :— 
Min. I7°C. ; Max. 44°C. 
Average height of control plants. 8.5 e *™- 
,, the plant in ammonium nitrate. 10. ii C H0, 
,, the plant in sodium nitrate. 9-5 3 c * m * 
Average fresh weight of a control plant. 
,, the plant in ammonium 
nitrate. 
,, the plant in 
nitrate. 
Ammonium nitrate solution applied. 
Sodium ,, ,, ,, 
Table V :—In 100 parts of dry matter (free from ash). 
y y 
y y 
y y 
y y 
y y 
y y 
sodium 
1.07 gram. 
1.13 gram. 
1.18 gram. 
5o 8 c,c ‘ — o. 178 gram. 
6o8 c - c -=0.201 "ram. 
Albuminoid nitrogen 
Proteids 
Asparagine nitrogen 
Asparagine 
Control plants 
2.82 
17.64 
1.65 
7-77 
Dalits treated with 
Ammonium nitrate 
2.99 
18.66 
2-57 
12.10 
Sodium nitrate 
3-II 
19.44 
2-33 
10.98 
V. Experiments with potato plants (Solanum tuberosum). 
Well developed potato plants were taken from the field, and 
placed in the following solutions : — 
a, 0.1% solution of ammonium nitrate. 
b, 0.2% solution of sodium nitrate. 
c, distilled water. 
The plants were kept in a glass house. 
Time of experiments. Oct. 12th—Oct. 21th. 
Temperature :— Min. i6°C. ; Max. 40°C. 
At the end of the experiment, the plants began to suffer, 
and a portion of the roots commenced to decay. Of course, all 
the unhealthy parts were removed ; only the lower portion of the 
stem 10-15°-™- in length served for analysis. No ammonia was 
found either in the original plants or in the other three cases, but 
(2) In the second experiments with squash, the plants were also attacked by a 
fungus; hence I could not continue the experiment. 
