OHIO (Cont. ) 



or combinations of substances to fishes under a variety of conditions; and to 

 develop procedures for the use of bioassays in the safe disposal of toxic wastes. 



Studies are being conducted to determine the toxicity of the more uncommon 

 metals as beryllium, titanium, uranium, etc. , and certain of the organic in- 

 secticides. Studies are to be initiated on the oxygen requirements of selected 

 aquatic organisms. 



Sanitary Engineering Center, Cincinnati; began January 1949, continuing; 

 $23,000; C. M. Tarzwell, Leader; reports available. 



Address inquiries to: Dc Clarence M. Tarzwell, Chief, Biology Section, 

 Sanitary Engineering Center, 4676 Columbia Parkway, Cincinnati, Ohio. 



OKLAHOMA 



Game and Fish Department 



1. Farm Pond Investigations. (FA:F-1-R) 



The objectives of this project are to determine the most suitable combina- 

 tions and numbers of fish species for different types of farm ponds. In the 

 beginning 30 ponds were selected and all fishes were removed by draining or 

 use of chemicals. Each pond was then stocked with the connbinations of species 

 on which information is desired. Project activities include taking of bottom 

 samples, water temperature, and fish samples for age and growth studies. 



Atoka County; began April 1952, to close March 1955; $25,000; C. M. Kramer, 

 Leader; reports available. 



Address inquiries to: Game and Fish Department, Capitol Building, Okla- 

 homa City 5, Okla. 



2. Tenkiller and Fort Gibson Reservoirs Fisheries Investigations. (FA: F-4-R) 



The objective of the project is to determine post-impoundment fish popula- 

 tion trends in new impoundments, Tenkiller and Fort Gibson Reservoirs. A 

 full time biologist is employed at each lake to sample fish populations, deter- 

 mine anglers take, note fishing trends, determine rate of growth of both food 

 and game fish; study fish population densities, ratios and survival of the year 

 classes. 



Tenkiller and Fort Gibson Reservoirs; began September 1953, to close 

 September 1956; $45, 000; H. D. Crawley and H. M. Hancock, Leaders. 



Address inquiries to: Game and Fish Department, as in No. 1 above. 



3. Study of the Streams in the Ouachita National Forest. 



The project objectives are to determine the fish populations present in 

 the streams and to outline a program for stream management to increase angling 

 returns in the forest. Upon completion of this preliminary survey the manage- 

 ment program will be inaugurated. 



Ouachita National Forest; began January 1954, to close December 1954; 

 $10,000; H. A. McCoy, Leader. 



Address inquiries to: Ganne and Fish Department, as in No. 1 above. 



4. Municipal Lakes Improvement Program. 



The object of this project is to improve sport fishing in water supply reser- 

 voirs that have long since ceased to afford good fishing. Since draining or 

 complete poisoning were out of the question, partial poisoning (the State Depart- 

 ment of Health cooperating) of the fish populations was attempted. During the 

 summer of 1953, twenty-odd city reservoirs were treated by a special crew. 

 The work will continue each year. 



95 



