MICHIGAN (Cont. ) 



known sizes. This information is secured from experimental stream, and from 

 screened natural raceways. 



Montmorency County; began October 1943, continuing; $1,102; D. S. Shetter, 

 Leader. 



Address inquiries to: Institute for Fisheries Research, as in No. 1 above. 



25. Population Studies, Hunt Creek. 



The objective is to determine residual populations of brook trout through the 

 use of various estimation techniques in waters of Hunt Creek Drainage at the close 

 of angling season. 



Montnnorency County; began Septennber 1949, continuing; $1,782; D. S. Shetter, 

 Leader; reports available. 



Address inquiries to: Institute for Fisheries Research, as in No. 1 above. 



26. Trout Migration Studies, Hunt Creek. 



Determination of extent of movement into or out of experimental sections of 

 Hunt Creek is possible by operation of weirs and maintenance of marking records. 



Montmorency County; began April 1949, continuing; $6, 757; D. S. Shetter, 

 Leader. 



Address inquiries to: Institute for Fisheries Research, as in No. 1 above. 



27. Age and Growth Studies, Hunt Creek. 



Growth analysis is made of brook trout in anglers catch from various experi- 

 mental waters, and of the residual population of brook trout. 



Hunt Creek Trout Experiment Station, Montmorency County; began 1950, 

 continuing; $5,568; D. S. Shetter, Leader. 



Address inquiries to: Institute for Fisheries Research, as in No. 1 above. 



28. Age and Growth, Michigan Game Fishes. 



Activities are carried out which enable determination of statewide average 

 growth and sex ratio of each species for comparisons between waters. 



Statewide; began 1932, continuing; $6,989; J. E. Williams, Leader; reports 

 available. 



Address inquiries to: Institute for Fisheries Research, as in No. 1 above. 



29. Periodicity of Fish Growth. 



By analysis of scale samples collected throughout the year from fish in four 

 lakes, the investigation seeks to determine time of year during which fish grow 

 and the percentage of growth in the various months of the growing season. 



Four Michigan lakes; began 1946, to close 1954; $1,566; J. E. Williams, 

 Leader. 



Address inquiries to: Institute for Fisheries Research, as in No. 1 above. 



30. Cycles in Growth Rate of Fish. 



The project is set up to determine if natural cycles in rate of growth of game 

 and pan fish occur in Michigan lakes and to make yearly scale sample collections 

 from experimental lakes for growth comparisons. 



Eighteen lakes throughout the State; began 1947, to close 1954; $1, 566; J. E. 

 Williams, Leader. 



Address inquiries to: Institute for Fisheries Research, as in No. 1 above. 



31. Availability of Fish Food Organisms in Selected Southern Michigan Lakes. 



Year around quantitative and qualitative samples of fish food organisms are 

 taken from selected warnn-water lakes in Michigan to determine the factors which 

 influence the availability and utilization of fish food organisms. Also, 



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