INFLUENCE OF THE ALKALI SALTS UPON THE GROWTH OF RICE PLANTS. 283 
+ 1/10 N. CaCl 3 10 cc., 1/10 N. MgCl 3 15 cc. +-i/io N. CaCl 3 15 cc., 
1/10 N. MgCl 2 10 cc. + 1/10 N. CaCl 3 20 cc., 1/10 N. MgCl 3 5 cc. + 
1/10 N. CaCl 2 25 cc., 1/10 N. CaCl 3 30 cc., 1/10 N. MgCl a 25 cc. + 1/10 
N. BaCl a s cc., 1/10 N. MgCl a 20 cc. + 1/10 N. BaCl a 10 cc., 1/10 N. 
MgCl 3 15 cc. + 1/10 N. BaCl a 15 cc., 1/10 N. MgCl a 10 cc. + 1/10 N. 
BaCl a 20 cc., 1/10 N. MgCl a 5 cc. + 1/10 N. BaCI 3 25 cc., 1/10 N. BaCl a 
30 cc., 1/10 N. MgCl a 25 cc. + 1/10 N. SrCl a 5 cc., 1/10 N. MgCl a 20 
cc. + i/io N. SrCl 3 10 cc., 1/10 N. MgCl a 15 cc. + 1/10 N. SrCl 3 15 
cc., 1/10 N. MgCl a 10 cc. + 1/10 N. SrCl a 20 cc., 1/10 N. MgCl a 5 cc. 
+ 1/10 N. SrCl 3 25 cc. and 1/10 N. SrCl a 30 cc. respectively. Five 
seedlings, about 25 mm. high, which were grown in distilled water from 
seeds of almost uniform size and specific gravity (1.1 85-1.200), were 
transplanted in each beaker on February 25th (1913)- and kept in a green 
house. The evaporated water was supplemented with distilled water from 
time to time so as to keep the culture solutions always in their initial 
concentration. On March 14th, the difference in development in the 
respective culture was very striking, when the measurement was made 
with the following result : 
Solutions used 
Length 
of leaf 
Length 
of root 
Number 
of roots 
Distilled water 30 cc. 
68 
60 
8 
A, N. MgCl 3 30 cc. 
53 
12 
1 
J5 N. MgCl a 25 cc, + J 0 N. CaCl 3 5 cc. 
68 
50 
9 
A N. MgCI 3 20 cc. + Jg N. CaCl 3 10 cc. 
65 
40 
10 
A N - MgCl a 15 cc. + Jg N. CaCl 3 15 cc. 
62 
35 
8 
A N. MgCl a 10 cc. + Jg N. CaCl 3 20 cc. 
60 
20 
8 
A N. MgCl 3 5 cc. + Jg N. CaCl a 25 cc. 
52 
15 
6 
Jg N. CaCl 3 30 cc. 
44 
12 
8 
A N. MgCl a 25 cc. + Jg N. BaCl 3 5 cc. 
40 
12 
1 
Jg N. MgCl a 20 cc. + A N. BaCl a 10 cc. 
33 
IO 
1 
Jg N. MgCl a 15 cc. + J 5 N. BaCl a 15 cc. 
28 
8 
1 
