ILLINOIS (Cont.) 



stream fishes. Artificial manipulation of some populations has given informa- 

 tion on the importance of competition among the different species. 



Vermilion County; Dept. of Conservation cooperating; continuing; $10,500. 

 Address correspondence to: Dr. R. Weldon Larimore, Asst. Aquatic Biologist, 

 111. Natural History Survey, Natural Resources Bldg. , Urbana, 111. 



2. Experimental Stocking of Farm Ponds. 



The value of various combinations of fishes in the production of high hook-and-line 

 yields in farm ponds is being investigated. 



Statewide; continuing; $3,000. 



Address correspondence to: Dr. George W. Bennett, Head of Section, 111. Nat. 

 Hist. Survey, Nat. Resources Bldg. , Urbana, 111. 



3. Interspecific Competition Among Pond Fishes. 



The two ponds used in this experiment (Z.5 and 114 acres) are subjected to moderate 

 fishing pressures. At 2-year intervals, the ponds are drained and the fish 

 populations of several species of warm-water fishes are artificially adjusted 

 with the objective of studying various degrees of interspecific competition. 



State 4-H Club Camp at Monticello, Piatt County; Univ. of 111. cooperating; 



indefinite; $1, 500. 

 Address correspondence to: Dr. George W. Bennett, Head of Section, 111. Nat. 



Hist. Survey, Nat. Resources Bldg., Urbana, 111. 



4. An Investigation of the Sport and Commercial Fisheries of Some Flood Plain Lakes 

 of the Illinois River: Chautauqua, Quiver, and Matanzas Lakes. 



The values of sport and commercial fisheries of the Illinois River bottomland lakes 

 will be determined while management practices designed to increase the yield 

 of sport and commercial fishes are being developed. The biology of the fishes 

 in the lakes is being studied and the dynamics of the fish populations are being 

 estimated. 



Mason County; The Dept. of Conservation and the U. S. Fish and Wildlife Service 



Cooperating; indefinite; $10,000. 

 Address correspondence to: Dr. William C. Starrett, Assoc. Aquatic Biologist, 



111. Natural History Survey Laboratory, Havana, HI. 



5. Management of Largemouth Bass at Ridge Lake. 



This study is aimed at finding the factors controlling development of fishable popu- 

 lations of largemouth bass, the relationship of bass to other fishes, and its 

 vulnerability to angling. 



Fox Ridge State Park, Coles County; indefinite; $2,000. 



Address correspondence to: Dr. Geo. W. Bennett, Head of Section, 111. Nat. Hist. 

 Survey, Nat. Resources Bldg. , Urbana, Ell. 



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