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51934 
Technical Report 
Lethal doses of several commercial chemicals for fingerling channel catfish 
Clemens, HP; Sneed, KE 
1959 
U.S. Fish and Wildlife Service 
Washington, DC 
U.S.Fish.Wildl.Serv., Spec.Sci.Rep.- Fish No.316, Washington, DC 
10 p. 
SUMMARY The data in the following table were collected during the screening of several chemicals to determine the toxicity of some of those in use or that might be useful in various phases of channel cat-fish culture. The information reported should be useful to fishery workers interested in control of diseases, parasites, aquatic vegetation, and pollution of our streams and lakes. We have not yet tested the effectiveness of these chemicals for these control purposes. Experiment were conducted in a manner identical with those previously reported 1, with the exception of chemicals marked with an asterisk in table 1. In these tests, 4-gallon aquariums were used instead of quart jars, and 10 channel catfish fingerlings, 2 to 3inches long, were placed in each aquarium. The diluent in all cases was tap water of the University of Oklahoma, and its chemical analysis was reported in the paper referred to above. One hundred or two hundred fish were used in each experiment, 10 fish at each concentration. All concentrations are reported as parts per million (p.p.m.) by weight of material as it came from the bottle except that chlordane, acetic acid, Chem-Fish Special, sodium arsenite, toxaphene, sodium tachlorophenolate, and formalin were expressed as p.p.m. by volume.
We are grateful to the following companies who supplied the various chemicals in addition to others which have not yet been tested: American Cyanamid Company; Barada & Page, Inc.; California Spray Chemical Corporation; Carbide and Carbon Chemicals Company; Chemical Insecticide Corporation; Dow Chemical Company; E. I. duPont de Nemours & Company; Mallinckrodt Chemical Works; Merck & Company, Inc.; Monsanto Chemical Company; and Thompson-Hayward Chemical Company. 
Special Scientific Report - Fisheries No. 316