296 



American Fisheries Society 



added must be determined for the treatment to be most 

 effective. 



II. Data on the blunt-nosed minnow, Pimephales notatus (Rafin- 

 •esque), when killed in 0.297 N. sodium chloride to which different 

 amounts of calcium chloride have been added 



[Column one gives the normality of the calcium chloride of the 0.297 N. sodium 

 chloride solution. 20° C] 



bibliography 

 Osterhout, W. J. V. 



1914. Quantitative Criteria of Antagonism. Bot. Gaz., 58:178-186. 

 Powers, E. B. 



1920. Influence of Temperature and Concentration on the Toxicity 

 of Salts to Fishes. Ecology, 1:95-112. 



1921. .\ Comparison of the Electrical Conductance of Electrolytes 

 and their Toxicities to Fish. Amer. Jour. Physiology, 55:197-200. 



