Measurement of Rate of Shrinkage of Turgid Tissues. I. 303 
be seen that the general distribution of the curves with respect to tempera- 
ture is very similar to that for the onion excepting at low temperatures. 
Table IV. 
Table of contractions at different temperatures with 0*3 grm. M. sugar. 
Contraction as 
Temperature. 
divisions on 
Time. 
scale. 
8° C. 
3 h '5 
3 hr. 8 min. 
1 4° C. 
34 
4 hr. 45 min. 
19 0 C. 
36 
1 hr. 27 min. 
24 0 C. 
39 
1 hr. 5 min. 
26° C. 
15 
45 min. 
29 0 C. 
i («) 
!(*) 
26-5 
35 „ 
32 0 C. j 
3 2 
27 -S 
28 „ 
2( „ 
34° C. 
29 
18 „ 
33° C. 
8*6 
l6 „ 
36° C. 
1 d)' 
1 T 
24-2 
H „ 
4 2°C. 
2 2°5 
27 
10 
*4 >> 
The tangents of these curves at different stages in plasmolytic 
contraction are given in Table V, and the values at mid-plasmolysis 
plotted as before to the corresponding temperatures give the curve repro- 
duced in Fig. 15. 
Table 
V. 
Temperature. 
Rates of plasmolytic contraction at 
3° to 
50 % 
7° /o of total contraction. 
8° 
C. 
!*4 
1*0 
079 
1 4° 
C. 
2*8 
1 *7 
0*96 
3 9 0 
c. 
4‘3 
27 
i*9 
2 4 ° 
c. 
5* 1 
i*9 
26° 
c. 
7-2 
4"5 
2*4 
2 9° 
c. 
j («) 
id) 
167 
9-8 
3*5 
3 2 ° 
c. 
L5*5 
i6»6 
io*3 
I 2-2 
3*9 
5*2 
33° 
c. 
2 3 
]3'6 
9*i 
34° 
c. 
15*1 
14-9 
67 
36° 
c. 
i 0 ) 
Id) 
28*9 
15*6 
S c 9 
4 2 ° 
c. 
35*9 
3 1 ’ 2 
22*8 
237 
J 5°5 
*77 
From this curve for 50 per cent, contraction, the following temperature 
coefficients may be derived : 
Temperature Coefficients of increase 
range. for io° C. 
