690 
Fritsck and Haines.—-The Moisture-relations 
The results are given in Table IV A, and they show quite clearly that the 
presence of xylol brings about no difference that is outside the limits of the 
ordinary experimental error above considered. 
Table IV. 
Calculation of possible error. 
Material. 
Cells 
counted. 
Sol. 
Strongly 
plasm ol . 1 
Deviat. 
from 
Error. 
Slightly 
plasmol A 
Deviat. 
from 
Error. 
Unaf¬ 
fected. 
Deviat. 
from 
0/ 
/o 
% 
mean. 
0/ 
/o 
% 
mean. 
0/ 
/o 
% 
mean. 
Zygogonium 
1 A 35 
5 *o 
76-9 
— 2-6 
' 3 A 
T 4*4 
4 - 4-9 
34 *o 
8*7 
-2*3 
)} 
1,000 
1,046 
yy 
83-6 
4 - 4* 1 
4*9 
6*4 
— 3 * 1 
4 8 *5 
100 
— 1*0 
y y 
86*3 
+ 6*8 
7*9 
4 *o 
“ 5*5 
L 37-5 
9*7 
-i *3 
1,051 
y y 
71*2 
- 8-3 
11 *6 
13*2 
+ 3*7 
28*0 
15*7 
+ 4*7 
Average 
79*5 
9*5 
11 0 
Zygogonium 
1,093 
3 -o 
68-6 
+ 2-8 
4 T 
19*4 
-o*5 
2*6 
12-0 
-2*3 
yy 
1,262 
yy 
64*1 
- I *7 
2*7 
19*6 
-0*3 
i *5 
16*4 
4- 2*1 
yy 
1,023 
yy 
64-7 
— 1 -i 
i *7 
20*7 
4-o*8 
3-9 
14*6 
+ 0*3 
Average 
658 
19 9 
14*3 
Hormidium 
1,023 
3 -o 
45 * 8 
— 13*0 
28*4 
32*7 
+ 3*2 
9-8 
21*6 
4 - 9*9 
>> 
1,008 
65-8 
+ 7*0 
i o*6 
26*6 
-2.9 
10*9 
7*6 
-41 
1,012 
?, 
67*8 
+ 9 *o 
13*3 
23*7 
-5*8 
245 
8*5 
“ 3*2 
*y 
Average 
1,004 
yy 
55*7 
- 3 *i 
5*6 
35*2 
+ 5 - 7 
16*2 
9-1 
— 2*6 
58-8 
29*5 
ii *7 
Protonema 
1,010 
5 -o 
76*1 
- 3 *i 
4 -i 
H *3 
4 - 1*0 
7*0 
9*7 
4- 2*1 
yy 
1,000 
yy 
83-0 
+ 3-8 
4*6 
10*7 
— 2*6 
2 4*3 
6*3 
-i *3 
yy 
1,000 
yy 
75*2 
-4*o 
5-3 
17*2 
+ 3-9 
22*7 
7*6 
— 
» 
1,000 
yy 
82-4 
+ 3-2 
3’9 
I 1*0 
-2*3 
20*9 
6*6 
— 1*0 
Average 
792 
13*3 
76 
Plasmol. 
_ 
Deviat. 
Error . 
Unaf¬ 
fected. 
% 
Deviat. 
Error. 
Pleurococcus 
% 
0/ 
/o 
% 
1,000 
25.0 
8 7'5 
4-2*1 
2*4 
12*5 
— 2.1 
i6*S 
yy 
yy 
yy 
8 3-9 
f -i -5 
i*8 
16*1 
+ i *5 
9*3 
y: 
yy 
yy 
86-2 
4-o*8 
1*0 
13*8 
-0-8 
5*8 
y' 
>> 
yy 
84-1 
-i -3 
i -5 
15*0 
+ !-3 
8*2 
Average 
854 
146 
Table IV a. 
Investigation of error due to xylol in the sealing medium. 
(5 % sea-salt solution.) 
Material. 
Method of 
Cells 
Strongly 
Slightly 
Unaffected. 
sealing, 
counted. 
piasmolysed. 
piasmolysed. 
0 / 
Zygogonium 
(in xylol) 
1,056 
% 
94*7 
/o 
2*0 
% 
3*3 
yy 
(melted) 
1,208 
9 2 *7 
3*3 
40 
Protonema 
(in xylol) 
949 
83*2 
12*4 
1 
4*4 
yy 
(melted) 
I,OCO 
84*7 
7*6 
77 
1 Cf. foot-note on p. 686. 
Error 
0/ 
/o 
26-4 
io*o 
13-4 
3 °.° 
19-2 
12-8 
2-1 
45-9 
54 '° 
37*6 
28.6 
21-6 
20.6 
15.2 
