the skin and therefore lackadaisical handling 

 of them should be guarded against. Sodium 

 cyanide should be limited to use by competent 

 and responsible technicians. 



ACKNOWLEDGMENT 



Doudoroff, P., andM. Katz 



1950. Critical review of literature on 

 the toxicity of industrial wastes 

 and their components to fish . 

 Sew. and Ind. Wastes. 22(11): 

 1432-1458. 



The writer wishes to acknowledge the 

 facilities made available by the Cooperative 

 Fishery Research Laboratory of Southern 

 Illinois University and the Illinois Department 

 of Conservation. The assistance that was pro- 

 vided in field investigations by the personnel 

 of the Cooperative Fishery Research Laboratory 

 is greatly appreciated. 



For his frequent advice and assistance, 

 the writer is particularly indebted to Dr . 

 William M. Lewis under whose direction this 

 study was conducted. 



LITERATURE CITED 



Burdick, G . E . , and M . Lipschuetz 



1948. Toxicity of ferro- and ferricyanide 

 solutions to fish, and determina- 

 tion of the cause of mortality. 

 Trans. Am. Fish. Soc. 78:192-202. 



Doudoroff, P. 



1956. Some experiments on the toxicity 

 of complex cyanides to fish. 

 Sew. and Ind. Wastes. 28(8): 

 1020-1040. 



Downing, K. M. 



1954. The influence of dissolved oxygen 

 concentration on the toxicity of 

 potassium cyanide to rainbow trout. 

 Jour. Exp. Biol. 31(2):161-164. 



Ellis, M. M. 



1937. Detection and measurement of 

 stream pollution. Bui. U.S. 

 Bur. Fish. 48(2^:365-437. 



Lipschuetz, 

 1955. 



Wilne, D. 

 1950. 



M., and A. L. Cooper 

 Comparative toxicities of potassium 

 cyanide and potassium cuprocyanlde 

 to the western black -nosed dace, 

 ( Rhinichthys atratulus meleagris) . 

 New York Fish and Game Jour. 

 2(2^:194-204. 



Equilibria in dilute cyanide solutions. 

 Sew. and Ind. Wastes. 22(7):904-911 . 



Renn, C. 

 1955. 



E. 



Biological properties and behavior 

 of cyanogenic wastes. Sew. and 

 Ind. Wastes. 27(3):297-308 . 



11 



INT,-DUP. SEC WASH., D.C. 32*614 



