INFLUENCE OF THE ALKALI SALTS UPON THE GROWTH OF RICE PLANTS. 273 
3. Result with MgCl 2 and MgS0 4 . 
Solutions used 
Length 
of leaf 
Length 
of root 
Number 
of roots 
To N - M g C1 2 3° cc - 
45 
35 
I 
To N. MgCl 2 25 cc. + Jö N. MgS0 4 5 cc. 
60 
40 
I 
N. MgCl a 20 cc. + j* Q N. MgS0 4 10 cc. 
55 
30 
I 
To N - m S CI 2 x 5 cc- + To N - MgS0 4 15 cc. 
48 
30 
I 
Jg N. MgCl 2 10 cc. + jJg N. MgS0 4 20 cc. 
50 
25 
I 
N. MgCl 2 5 cc. (- Jg N. MgS0 4 25 cc. 
55 
25 
I 
to N - MgS0 4 30 cc. 
40 
25 
I 
Distilled water 30 cc. 
80 
50 
7 
Culture period Nov. 19th — Oct. 1st (1912). 
Initial length of seedlings 20 mm. 
4. Result with NaN0 3 and NaCl. 
Solutions used 
of leaf 
Length 
Number 
of roots 
tL N. NaN0 3 30 cc. 
43 
25 
I 
Jg N. NaNOg 25 cc. + Jg N. NaCl 5 cc. 
63 
35 
7* 
Jg N. NaNOg 20 cc. + ^g N. NaCl 10 cc. 
59 
30 
6 X 
jJg N. NaNOg 15 cc. + ^g N. NaCl 15 cc. 
55 
35 
6* 
Tg N. NaNOg 10 cc. + to N. NaCl 20 cc. 
50 
25 
5* 
Jg N. NaNOg 5 cc. + Jg N. NaCl 25 cc. 
57 
30 
6* 
Jg N. NaCl 30 cc. 
46 
25 
3 X 
Distilled water 30 cc. 
78 
58 
7 
Culture period Feb. 20th — March 5th (1913). 
Initial length of seedlings 25 mm. 
