Zoology at the University of Rhode Island and on the summer staff 

 of the Canadian National Research Council. His major research 

 interests and publications are in the fields of ecology and physio- 

 logy of avian energetics and migration. 



Frederick A. Milan obtained his B.A. in 19 52 from the Univer- 

 sity of Alaska and his M.A. from the University of Wisconsin, 

 1959. He is currently studying for the Ph.D. degree at the Univer- 

 sity of Wisconsin, Department of Anthropology. His investigations 

 of human response to cold have taken him to the Australian interior, 

 the arctic coast of Alaska, the Tierra del Fuego, Lappland, the 

 Antarctic, the Canadian Archipelago, and mountain summits in 

 Alaska. 



Peter Reed Morrison has a B.S. from Swarthmore College in 

 1940 and a Ph.D. from Harvard University Biology Department 

 in 1947. Presently he is Professor of Physiology and Zoology, 

 University of Wisconsin. His work includes the fieMs of tempera- 

 ture regulation and energy metabolism in wild mammals, altitudinal 

 adaptations in wild mammals, coagulation and the polymerization 

 of fibrinogen, hibernation, physiological descriptions of intact 

 animals, and individual tissue specializations. 



Jack W. Hudson obtained his M.A, from Occidental College, 

 Biology Department, 1950 and his Ph.D. from University of 

 California, Los Angeles, Zoology Department, 1960. He is now 

 a lecturer in that department. The list of his research interests 

 is.: Aestivation and hibernation in mammals, water metabolism and 

 kidney function in desert mammals, uric acid excretion in birds, 

 relation of heart rate, body size and thermal neutrality in birds. 



