PAPERS ON ZOOLOGY 279 



"Wlierever stream pollution occurs it is evident that the 

 clean-water animals "will sooner or later be driven out or 

 killed. Such a condition seriously effects our food and 

 game fishes, which form so large a part of the meat of 

 our population, and the situation demands immediate 

 attention and early remedy. It is a matter of great sat- 

 isfaction to scientific men that the authorities are awak- 

 ened to the seriousness of such conditions and that they 

 are providing adequate remedies in many places. 



LIST OF REFERENXES IX THE TEXT 



Forbes, S. A. and Richardson, R. E. 



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 Leighton, Marshall 0. 



1904. Quality of Water in the Susquehanna River Drainage Basin. 

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 Ortmann, Arnold E. 



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1918. Ways and Means of Measuring the Dangers of Pollution to 



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vestigation of the Problem from the Standpoint of a 

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 Wells, Morris M. 



1918. The Reactions and Resistance of Fishes to Carbon Dioxide 

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Whipple, George C. 



1913. Report on the Sewage Disposal System of Rochester, N. Y. 

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 Wilson, Charles B. and Clark, H. Walton. 



1912, The Mussel Fauna of the Maumee River. Bureau of Fisher- 

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