266 
K. MIYAKE. 
25 mm. high) and kept in a green house. The evaporated water was supple- 
mented with distilled water from time to time to keep solutions always 
in their initial concentrations. The measurement was made when the 
difference in development in the respective cultures was strikingly notice- 
able. 
Method B. The experiment was carried out in the same manner as 
in method A excepting the sowing of 25 seeds in place of the trans- 
planting of 5 seedlings. The plants were grown in a room of ordinary 
temperature. 
In carying out the experiments described beyond the method A has 
been adopted unless otherwise stated. 
A. The Antagonism between two Salts with different 
Cation but same Anion. 
The antagonism between two salts with different cation and same 
anion was tested in nine combinations with the following results : 
1. Result with NaCl and KC1. 
Solutions used 
Length 
of leaf 
Length 
Number 
of roots 
Hj N. NaCl 30 cc. 
35 
35 
2* 
Y5 N. NaCl 25 cc. + ■y’ö N. KC 1 5 cc. 
60 
45 
6 X 
T ’ s N. NaCl 20 cc. + xg N. KC 1 10 cc. 
55 
45 
6* 
Jq N. NaCl 15 cc. + •y'ö N. KC 1 15 cc. 
55 
40 
6 X 
jL N. NaCl 10 cc. + y'g N. KC 1 20 cc. 
42 
45 
7 * 
t l N. NaCl 5 cc. + ^ N. KC 1 25 cc. 
50 
35 
6 X 
N. KCl 30 cc. 
40 
25 
6 X 
Distilled water 30 cc. 
68 
43 
7 
x Only one root (primary root) was well developed. 
Culture period Feb. ist — Feb. 18th (1913). 
Initial length of seedlings 20 mm. 
