TABLE 1 



Showing the reactions oj fishes to .OIN concentrations of various salts, in gradients 

 of different kinds of water, i.e., waters of different degrees of acidity 



Work done at Chicago. 



TABLE 2 



Comparing the reactions of fishes to single salts and to combinations of antagonistic 

 salts. One salt is present in .OIN concentration and the other as a trace {.0002N). 

 Slightly acid tap contains 6-8 cc. CO2 per liter; strongly acid 18 cc. CO2 per liter; 

 distilled water is fainty acid {2-3 cc. CO2 per liter) 



256 



