Kile J Ralph, and Hilary J, Deason (continued) 



19U7o Distribution, abundance, and spawning season and 

 grounds of the kiyi, Leucichthys kiyi Koelz, in 

 Lake Michigan. Trans, Anio Fish, Soc, Vol, 7k 

 {I9hh)s pp. lU3-165o 



Analysis of catch data from experimental gill nets for 

 records of geographical distribution and study of vertical 

 distribution and regional abundance. Kiyi established as 

 deep-water form taken in numbers in less than ^0 fathoms 

 only at times of unusual hydrograpnic disturbances. Abund- 

 ance determined to be nearly uniform throughout great central 

 basins, but species found to be scarce in northeastern island 

 area. Spawning-run samples indicated no movement toward in- 

 shore waters and a spawning season extending from late Septem- 

 ber to mid-November or later. 



Hile, Ralph J and William R. Ddden 



1933o Methods for the investigation of the statistics of the 

 commercial fisheries of the Great Lakes. Trans, Am, 

 Fisho Soc, Vol, 63, ppo 292-305. 



Account of tentative procedures for compilation and 

 analysis of commercial fishery statistics. Includes a defi- 

 nition of "effective fishing effort" for use in fisheries 

 based on a variety of species. 



Hile, Ralph, Paul H. Eschmeyer, and George F„ Lunger 



19^1. Decline of the lake trout fishery in Lake Michigan. 

 Fish. Bull., Fish and Wildlife Ser^-". , Vol. $2, 

 pp. 77-95. 



Statistical study of the lake trout fishery similar to 

 that made by Hile (191|9) for Lake Huron, Detailed records of 

 fishing pressure in 1929-19U9 proved that overfishing could 

 not have been a significant factor in decline of lake trout 

 in State of Michigan waters of Lake Michigan and contributed 

 to conclusion that sea-lamprey depredations offered the orily 

 reasonable explanation. 



1951. Decline of the trout fishery in Lake Michigan, The 

 Fisherman, Vol, 19, NOo 1, pp, 5 and 10. 



Summary of longer paper published by same authors under 

 similar title in sam.e yeaxo 



-19" 



