Turgor and of Temperature on Growth . 373 
A comparison of the curve of growth here found with that 
of normal growth In water brings forth one striking difference. 
In the 1 per cent, solution, the curve does not rise to the usual 
maximum. The process of accommodation takes place quickly, 
after 3^ hours at most, the rate of growth being plainly 
equal to the normal. As remarked by de Vries 1 , however, in 
similar experiments, the growth of the second day is reduced. 
During the remainder of the experiment, the curve rises at no 
time to a higher point than that reached immediately after 
the accommodation to the new medium had taken place. 
The resulting total growth is, therefore, decidedly smaller than 
that characteristic for the control in water for a like length of 
time. 
TABLE III. 
Period. 
Growth per hr. 
Medium. 
Hours. 
Min. 
30 
*0.10 mm. 
0.25% KN0 3 
2 
30 
o-45 
5? 
PP PP 
2 
30 
0.70 
PP 
IP PP 
15 
45 
0.73 
pp 
PP PP 
23 
45 
°’54 
pp 
PP PP 
2 7 
00 
0-30 
PP 
PP PP 
20 
J 5 
0.16 
pp 
PP PP 
24 
45 
0.05 
» 
PP PP 
29 
00 
0-00 
pp 
PP PP 
* Estimated average contraction. 
For comparison, Table III, showing the average growth-rates 
of a series of four radicles of Lupinus albus in a 0*35 per cent. 
KN 0 3 solution, is here given. Temperature 17*0° to 19*5° C. 
The same general course seen in the last experiment is here 
repeated. A rather rapid accommodation, approximately 
normal growth for nearly a day, then a gradual and continued 
decrease with a much reduced total growth, are the features 
to be noticed. 
De Vries, loc. cit., p. 58. 
