Turgor and of Temperature on Growth. 375 
a i*o per cent. KN0 3 solution, and during the 9 days following 
the sudden transfer to water. The averages are drawn from 
but three specimens, one showing pathological symptoms 
after the transfer to water being excluded. 
TABLE IV. 
Period. 
Growth 
per hr. 
Medium. 
Temperature. 
Hours. 
Min. 
30 
* 0-30 mm. 
1% KN 0 3 
18-0 C. 
3 
OO 
0-05 
55 
59 55 
I 8*2 „ 
2 
45 
0.65 
„ 
5 5 95 
17-5 1, 
*7 
00 
o -55 
55 
»5 55 
i7-o „ 
26 
00 
0-50 
V 
5 5 55 
17*2 „ 
22 
15 
0.40 
„ 
55 55 
17-2 „ 
30 
f0-20 
95 
Water 
OO 
3 
30 
0-40 
95 
00 
2 
45 
0-20 
„ 
00 
16 
45 
O. 5 O 
55 
55 
17*5 V 
2 3 
45 
0-75 
55 
55 
16-5 „ 
24 
00 
o -55 
55 
55 
16.4 „ 
2 5 
30 
0.70 
55 
55 
16.5 „ 
22 
30 
0-70 
55 
55 
16.5 „ 
24 
00 
0*70 
55 
*5 
17*2 », 
2 3 
30 
o-8o 
55 
V 
T 7’5 » 
24 
15 
o -55 
55 
» 
18.0 „ 
23 
30 
0.40 
55 
18-0 ,, 
* Estimated average contraction. 
f Estimated average elongation. 
As before remarked, the elastic elongation and contraction 
due to turgor-changes are here only estimated, and conclusions 
regarding these features of the experiment are to be drawn 
only from measurements made by means of the horizontal 
microscope. 
The transfer to the KN0 3 solution is here again followed 
by a short period of depression, which gives way to a normal 
growth-rate after about three hours. As seen in Tables I and 
