96 ILUNOIS BIOLOGICAL MONOGRAPHS [194 



1919. Stream Pollution. Jour, Amer. Water Works Assoc., 6:823-831. 



1919. Stream Pollution in New York State. A Preliminary Investigation of the Prob- 



lem from the Standpoint of the Biologist. New York Conserv. Comm., 79 pp., 



3 pi. 

 Wells, M. 



1918. The Reactions and Resistance of Fishes to Carbon Dioxide and Carbon Monoxide. 



BuU. III. State Lab. Nat. Hist., 11:557-571. 

 Wells, W. F. 



1920. Conservation of the Quality of Water of New York State as a Natural Resource. 



Science, 52:279-284. 

 Wilson, C. B. and Clark, H. W. 



1912. The Mussel Fauna of the Kankakee Basin. Bur. Fish, Doc, 758, 52 pp., pi. and 



map. 

 1914, The Mussels of the Cumberland River and its Tributaries. Bur. Fish. Doc, 781, 

 63 pp., 1 pi. 



