MICHIGAN (Cont. ) 



46. Brook Trout and Brown Trout Fishing Regulations. 



The project is designed to test the effect of higher size limits and bait restrictions 

 on angling quality for brook and brown trout. 



North Branch AuSable River, Crawford and Otsego Counties; began in 1949, indefi- 

 nite; $1,782; D. S. Shetter, Proj. Ldr.; reports available. 



Address correspondence to: Institute for Fisheries Research, Univ. Museums 

 Annex, Ann Arbor, Mich. 



47. Experimental Fishing Regulations on Lakes. 



Creel census, age, growth, and population studies are being used to determine the 

 effect of relaxed fishing regulations on 14 "experimental" lakes. 



Fourteen selected lakes, various parts of Michigan; beganApril 1951, planned for 

 6 years; $38, 313; K. E. Christensen, Proj. Ldr. ; reports available. 



Address correspondence to: Institute for Fisheries Research, Univ. Museums 

 Annex, Ann Arbor, Mich. 



48. Artificial Circulation, West Lost Lake. 



The project aims to deternnine if small stratified lakes can be circulated by pump- 

 ing bottonn water to surface; and what influence, if any, such an artificial circu- 

 lation has on plankton production. 



West Lost Lake, Otsego County; began July 1952, planned to close September 1952; 



$2,320; F. F. Hooper, R. C. Ball, Proj. Ldr s. ; reports available. 

 Address correspondence to: Institute for Fisheries Research, Univ. Museums 



Annex, Ann Arbor, Mich. 



49. Control of Fish Population by Partial Kill. 



The objective is to determine effect of lowered population density or growth rates 

 before and after poisoning. 



Sand Lake, Newaygo County; began in 1949, scheduled for completion in 1953; $2, 376; 



J. E. Williams, Proj. Ldr. 

 Address correspondence to: Institute for Fisheries Research, Univ. Museums Annex, 



Ann Arbor, Mich. 



50. Sucker Control, Big Bear Lake. 



Population analysis, growth study, food study, creel census aid in determining the 

 economic position of suckers in inland lakes and their relation to certain other 

 species. 



Big Bear Lake, Otsego County; began in 1940, completed in 1952; Walter R. Crowe, 



Proj. Ldr. ; reports in press. 

 Address correspondence to: Institute for Fisheries Research, University 



Museums Annex, Ann Arbor, Mich. 



49 



