252 
K„ MIYAKE. 
Table I. 
Salts 
Concentration 
used 
i N. 
i N. 
A N.| A N.| T j s N.] 
_a_ N 1 
500 iN, | 
lO^N.WsgN. 
Control 
Length of leaf mm. 
'g ^ 
22 
30 
85 
100 
130 
no 
120 
loo 
MgS0 4 
Length of root mm. 
^ a 
- 
IO 
60 
80 
80 
100 
”5 
Number of roots 
o & 
— 
1 
4 
6 
6 
6 
6 
Length of leaf 
•8 t 
ger- 
but 
de- 
25 
83 
105 
100 
io 5 
107 
IOO 
MgCl 2 
Length of root 
,o 1 
1| It 
- 
30 
105 
100 
120 
143 
u 5 
Number of roots 
a a 
< a § > 
- 
3 
3 
6 
6 
6 
6 
Length of leaf 
'd 13 
S rt 
|. i 
i8 
85 
105 
no 
145 
95 
IOO 
CaCl2 
Length of root 
o s 
i 1 
40 
75 
90 
190 
130 
”5 
Number of roots 
& s 
o & 
- 
5 
6 
6 
6 
6 
6 
Length of leaf 
12 
23 
150 
165 
145 
120 
loo 
IOO 
Na 2 S0 4 
Length of root 
O a 
- 
30 
70 
85 
75 
80 
”5 
Number of roots 
& ö 
- 
- 
4 
4 
6 
7 
7 
1 6 : 
Length of leaf 
’S 1 
4 
35 
155 
137 
no 
no 
no 
100 : 
NaCl 
Length of root 
w .2 
- 
- 
95 
125 
130 
120 
120 
115 : 
Number of roots 
& ö 
- 
6 
6 
6 
7 
7 
6 
Length of leaf 
■s 1 
f i 
5 
85 
120 
120 
no 
no 
100 ' 
Na 2 C0 3 
Length of root 
° s 
£ a 
~ 
27 
40 
78 
100 
135 
115 
Numberlofiroots 
£ Sj 
O M 
— 
6 
7 
7 
7 
7 
6 
Length of leaf 
’S ^ 
17 
55 
95 
120 
125 
100 
IOO 
100 ; 
NaHC0 3 
Length of root 
§ 1 
O g 
- 
2 
105 
io 5 
105 
100 
IOO 
1 15 | 
Number of roots 
£ ö 
2 
4 ’ 
5 
6 
6 
7 
6 
Table II. 
Salts used 
Concentration of toxicity 
Dilution of maximum i 
stimulation 
In former Exp. 
In latter Exp. 
In former Exp. 
In latter Exp. 
MgS0 4 
>2iüM.( T j 5 N.) 
> 100 N. 
n -) 
500 
MgCl 2 
» » „ 
„ „ 
^000 M - (1000 N 0 
50^)0 N * 
CaCl 2 
„ „ „ 
» 
10000 M> (s0oö N -) 
T000 
Na 2 S0 4 
» ii s M.(AN.) 
» A N. 
100 M. ( N.) 
100 N - 
NaCl 
.. (ii 0 N.) 
» tÄü n - 
TÄ0 M.( r J 0 N.) 
1Ä0 N. 
Na 2 C0 3 
.» (A,») 
» „ 
AinA0M^TÄirA0N.) 
500 N. 
NaHC0 3 
.. lfoM.(AN.) 
» A N - 
An m.( t j s N.) 
500 N. 
