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 
of leaf 
Length 
ofi root 
Number 
of roots 
Distilled water 30 cc. 
60 
55 
6 
2^ N. CaCI 2 30 cc. 
45 
40 
5 X 
N. CaCl 2 1 5 cc. + Jg N. NaCl 1 5 cc. 
68 
70 
6 
2*5 N. CaCl ;1 14CC. + Jo N. NaCl 16 cc. 
70 
6o 
6 
N. CaCl 2 1 3 cc. + N. NaCl 1 7 cc. 
65 
70 
6 
Jg N. CaCl 3 12 cc. + Jg N. NaCl i8 4 cc. 
68 
80 
6 
■gg N. CaCl 2 1 1 cc. + Jg N. NaCl 19 cc. 
73 
75 
7 
Jg N. CaCl 2 10 cc. + J5 N. NaCl 20 cc. 
73 
78 
7 
Jg N. CaCl 2 9 cc. + 20 N. NaCl 21 cc. 
68 
75 
6 
Jg N. CaCl 2 8 cc. + 2 g N. NaCl 22 cc. 
68 
75 
6 
g’g N. CaCl 2 7 cc. + N. NaCl 23 cc. 
68 
79 
6 
gLg N. CaCl 2 6 cc. + -£ g N. NaCl 24 cc. 
70 
85 
7 
Jg N. CaCl 2 5 cc. + Jg N. NaCl 25 cc. 
73 
85 
8 
2 ig N. CaCl 2 4 cc. + Jg N. NaCl 26 cc. 
70 
80 
7 
^0 N. CaCl 2 3 cc. + go N. NaCl 27 cc. 
70 
90 
5 
Jg N. CaCl 2 2 cc. + Jg N. NaCl 28 cc. 
65 
80 
5 
2 X g- N. CaCl 2 1 cc. + Jg N. NaCl 29 cc. 
68 
70 
6 
g x g N. NaCl 30 cc. 
57 
20 
1 
