Dedicated to the Memory 



of 



Robert D. Bergman, Leonard A. Boughton, and J. Larry Haddock, 

 Wildlife Biologists of the Fish and Wildlife Service, and Robert 

 Johnson, Pilot of the Office of Aircraft Services, all of the U.S. Depart- 

 ment of the Interior, who perished in the Gulf of Alaska on 30 

 September 1974 while conducting aerial surveys of marine birds, 



and to 



Einar Brun, Professor of Zoology in Tromsri University and a con- 

 tributor to these proceedings, who perished in the Vega Sea on 13 July 

 1976 when returning from making aerial surveys of marine birds. 



IV 



