390 True —Chi the Influence of Sudden Changes of 
Although the lower temperature limit is here somewhat higher, 
it can hardly be regarded as accounting for the speedy return 
of the normal growth-rate, since a parallel experiment with 
TABLE XIV. 
Period. 
Growth per hr. 
Temperature. 
H ours. 
I 
Min. 
OO 
o-oo mm. 
2-5° c. 
7 
00 
0-00 
3-2 „ 
17 
OO 
0.05 
6.0 „ 
23 
OO 
0-07 
op 
Tt- 
2 
00 
0.40 
5 y 
19.2 „ 
21 
OO 
0.65 
18.0 „ 
23 
OO 
°-75 
00 
01 
the lower limit between 0*4° and o-6° C. gives no longer period 
of retardation. 
In Table XV are given the average growth -rates drawn 
TABLE XV. 
Period. 
I 
Growth per hr. 
Temperature. 
Hours. Min. 
2 OO 
0-25 mm. 
6-o° C. 
15 
45 
0.02 „ 
2-0 „ 
I 
30 
0.50 „ 
22.4 „ 
2 45 
1.22 „ 
23-0 » 
3 
00 
00 
O 
23-0 „ 
20 15 
i*i6 „ 
23-0 „ 
21 
00 
6 
C\ 
22.5 „ 
from four roots of Vicia Faba during and after a stay of 
about 18 hours in a low temperature. 
Here a slight retardation is seen, which is quickly super- 
seded by a fully normal growth-rate. 
It was found in further experiments here not detailed, that 
