INFLUENCE OF THE ALKALI SALTS UPON THE GROWTH OF RICE PLANTS. 287 
each of the beakers. Seedlings were selected with the greatest care, so 
that those in each solution in a series should be as equal as possible in 
length of plumule and radicle. The beakers were then covered with glass 
plates and kept in a green house. The evaporated water was supple- 
mented with distilled water from time to time to keep the solutions 
always in their initial concentrations. After ten days, the difference in 
development in the respective cultures was very remarkable, when the 
measurements were made with the following results. 
1. Results with CaCl 2 versus NaCl. 
Solutions 
used 
Length 
of leaf 
mm. 
Length 
of 1 root 
mm. 
Number 
of roots 
Distilled water 30 cc. 
60 
55 
6 
A N. CaCl 2 
30 cc. 
45 
40 
5 X 
A N. CaCl 2 
: 5 cc. + A 
N. NaCl 
1 5 cc. 
68 
70 
6 
A N. CaCl ;i 
14CC. + a 
N. NaCl 
i6cc. 
70 
60 
6 
A N. CaCl 2 
13 cc + A 
N. NaCl 
17 cc. 
65 
70 
6 
A N. CaCl 2 
1 2 cc. + A 
N. NaCl 
18 cc. 
68 
80 
6 
A N. CaCl 2 
1 1 cc. + A 
N. NaCl 
19 cc. 
73 
75 
7 
A N. CaCl 3 
10 cc. + A 
N. NaCl 
20 cc. 
73 
78 
7 
A N. CaCl 2 
9 cc - + A 
N. NaCl 
21 CC. 
68 
75 
6 
A N. CaCl 2 
8 cc. + A 
N. NaCl 
22 CC. 
68 
75 
6 
AN- CaCL 
7 cc + A 
N. NaCl 
23 CC. 
68 
79 
6 
A N. CaCl 2 
6 cc. + A 
N. NaCl 
24 CC. 
70 
85 
7 
AN. CaCl 2 
5 cc + A 
N. NaCl 
25 CC. 
73 
85 
8 
A N. CaCl 3 
4 cc. + A 
N. NaCl 
26 cc. 
70 
80 
7 
AN. CaCl a 
3 cc + A 
N. NaCl 
27 cc. 
70 
90 
5 
A N. CaCl 2 
2 cc. + A 
N. NaCl 
28 cc. 
65 
80 
5 
A N. CaCl 2 
1 cc. + A 
N. NaCl 
29 cc. 
68 
70 
6 
A N. NaCl 30 cc. 
57 
20 
1 
