ILLINOIS (Cont. ) 



6. Fish Management in Reservoirs on Forest Soils. 



Techniques are being developed for the management of the bass-bluegill combina- 

 tion in an impoundment built over clay and rock land of poor quality in Lake 

 Glendale in the Shawnee National Firest. 



Pope County; indefinite; $2,000. 



Address correspondence to: Dr. Donald F. Hansen, Asst. Aquatic Biologist, 

 Natural Resources Bldg. , Urbana, HI. 



7. The Value of Pond Fertilization as a Means of Improving Fishing. 



Six ponds (three fertilized and three controls) are being tested through controlled 

 fishing to determine the amount of improvement attributable to the addition of 

 inorganic fertilizer. 



Dixon Springs Station, Pope County; Univ. of 111. Agriculture Exp. Station cooper- 

 ating; 10 years; $1,000. 



Address correspondence to: Dr. Donald F. Hansen, Asst. Aquatic Biologist, 

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



8. Life History and Ecology of the Warmouth, Chaenobryttus coronarius. 



This is a study of the ecological life history of the warmouth with the objective of 

 determining its suitability as a companion species with largemouth bass in ponds. 



Farm ponds in central Illinois; 7 years; $900. 



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

 Resources Bldg. , Urbana, 111. 



9. Collection of Commercial Fisheries Statistics. 



An Annual Inventory is being made of the commercial fish taken from the larger 

 rivers of the State. 



Statewide; Dept. of Conservation cooperating; continuing; $5,000. 

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

 Natural History Survey Laboratory, Havana, 111. 



10. Abundance and Distribution of Native Lannpreys. 



The species of lampreys native to Illinois Rivers are being studied to determine 



their abundance and distribution, also the locations of potential spawning streams, 

 should the sea lamprey invade the State's rivers from Laks Michigan. 



Statewide; Dept. of Conservation cooperating; 5 years; $1,000. 



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

 Natural History Survey Laboratory, Havana, 111. 



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