of Carbon Dioxide in U'lva latissima, L. 61 
Experiment IX. Artificial sea water without Mg Cl 2 . 
Begun Jan. 19, 1900. 
Date. 
Days. 
Amount of Starch. 
*— 1 
p 
to 
0 
1 
trace 
Jan. 23 
4 
moderate 
Jan. 29 
10 
large 
Begun Jan. 30, 1900. 
Feb. 14 
maximum 
Mar. 1 
2 9 
maximum 
. 
Experiment X. Artificial sea water without K Cl. 
Begun Jan. 19, 1900. 
Date. 
Days. 
Amount of Starch. 
Jan. 20 
1 
moderate 
Jan. 23 
4 
trace 
Jan. 29 
10 ; 
moderate 
Begun Jan. 30, 1900. 
Feb. 14 
14 
maximum 
Mar. 1 
29 
maximum 
Experiment XI. Control. Natural sea water. 
Begun Jan. 19, 1900. 
Date. 
Days. 
A mount of Starch . 
Jan. 20 
1 
trace 
Jan. 23 
4 
little 
Jan. 29 
10 
moderate 
Begun Jan. 30, 1900. 
Feb. 14 
14 
maximum 
Mar. 1 
29 
maximum 
