272 
K. MIYAKE. 
power of counteracting the injurious effects of anions upon the develop- 
ment of rice plants. The following seven culture fluids which were com- 
posed of two salts with different anion but same cation, were used to be 
examined. The results obtained were as follows : 
1. Result with NaCl and Na 2 S0 4 . 
Solutions used 
of leaf 
Length 
of root 
Number 
of roots 
j'q N. NaCl 30 cc. 
42 
30 
I 
Jg N. NaCl 25 cc. + j'g N. Na 2 S0 4 5 cc. 
60 
40 
I 
T \j N. NaCl 20 cc. + Jg N. Na 2 S0 4 10 cc. 
53 
30 
X 
T ] g N. NaCl 15 cc. + 3*5 N. Na 2 S0 4 1 5 cc. 
42 
30 
I 
T \s N. NaCl 10 cc. + N. Na 2 S0 4 20 cc. 
52 
30 
I 
J 0 N. NaCl 5 cc. + N. Na 2 S0 4 25 cc. 
55 
30 
I 
T J g N. Na 2 S0 4 30 cc. 
45 
35 
I 
Distilled water 30 cc. 
80 
50 
7 
Culture'period Nov.i 19th— Oct. 1st (1912). 
Initial length of seedlings 20 mm. 
2. Result with KC1 and K.S0 4 . 
Solutions used 
Legnth 
of leaf 
Length 
Number 
of roots 
N. KC1 30 cc. 
40 
35 
6 * 
Jg N. KC1 25 cc. + Jg N. K 2 S0 4 5 cc. 
47 
43 
7* 
Jg N. KC1 20 cc. + -lg N. K 2 S0 4 10 cc. 
47 
35 
6 * 
^g N. KC1 15 cc. + N. K 2 S0 4 15 cc. 
40 
32 
6 * 
T J g N. KC1 10 cc. + Jg N. K 2 S0 4 20 cc. 
50 
50 
7 X 
T ’g N. KC1 5 cc. + J 0 N. K 2 S0 4 25 cc. 
47 
35 
7 X 
T ’g N. K 2 S0 4 30 cc. 
35 
25 
6 * 
Distilled water 30 cc. 
58 
43 
7 
Culture period Feb. ist.— Feb. 18th (1913). 
Initial length of seedlings 20 mm. 
