LIFE HISTORY OF LAKE HERRING OF LAKE HURON 



ACKNOWLEDGMENTS 



269 



This study was carried on in the zoological laboratory of the University of 

 Michigan. I am indebted to the authorities of the university for the use of 

 rooms and equipment and to Prof. Jacob Reighard, until recently director of the 

 zoological laboratory, for critical supervision of my work. 



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INCLIIDINS 



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Fig. 1.— Lake Huron 



I am indebted, also, to Dr. Walter Koelz, whose material, field, and laboratory 

 data on the coregonids have always been at my disposal; to Dr. Charles Townsend 

 and Miss Ida Mellen, of the New York Aquarium, for valuable whitefish material and 

 for cooperation in experimental work; to Prof. John C Merriam, of the Carnegie 

 Institution, for encouragement and a donation toward the furtherance of the research; 

 and to Messrs. W. P. Kavanaugh, Norman Macaulay (manager of the Booth Fisheries 

 Co.), R. McCoy, and B. Trombley for the faciUties placed at my disposal while 

 working iu their fish houses at Bay City, Mich. 



