11 



Acknowledgments 



A large number of people both at the Scripps Institution of Oceano- 

 graphy and at the University of Copenhagen have contributed assistance 

 and ideas to this study. First and foremost, the staff of the American 

 Petroleum Institute, Project 51, especially J. R. Curray and T.J. 

 VAN ANDEL,made it possible to carry out the sampling program. Francis 

 P. Shepard also contributed ship time from his own portion of the 

 "Vermilion Sea Expedition" in 1959. R. W. Rowland, formerly of Scripps 

 Institution, contributed valuable assistance in the field and in the labora- 

 tory, making it possible to assemble the data together into some semblance 

 of order before the author left for Denmark. Jerry Cook, Gail Cook and 

 Linda Lightbowen, summer students under a National Science Foun- 

 dation program, also helped immeasureably in the compilation of data. 



The Computation Facility, University of California, San Diego, and, 

 in particular. Earl Ferguson, Anna Devore, Robert and Eileen 

 Mitchell, were responsible for devising the computor programs used in 

 this study. Without their assistance it would have been impossible to 

 verify many of the assemblages on an objective basis. 



Members of the Scripps Institution staff who contributed much of their 

 time and information were Carl L. Hubbs, who gave liberally of his 

 advice and support in obtaining funds, Richard Rosenblatt, who 

 assisted in the field and in the laboratory, Robert L. Fisher, who supplied 

 the bathymetric information, and Gunnar I. Roden, who provided much 

 unpublished hydrographic data from the Gulf of California. 



The author is also deeply grateful to the Zoological Museum of the 

 University of Copenhagen for permission to use their facilities, collections 

 and personnel during the period used to crystalize the thoughts and ideas 

 in this paper. He is particularly indebted to Henning Lemche, Jorgen 

 Knudsen, and especially to Niels Bjarnov, for their criticisms and 

 assistance. Valuable ideas and information were also gained from the 

 University of Copenhagen, Marine Biology Laboratory, Helsingor, Den- 

 mark, particularly from Gunnar Thorson, who has critically read the 

 manuscript, A. Moller Christensen and W. K. Ockelmann. 



A large number of specialists agreed to identify the invertebrate groups 

 which were unfamiliar to the author, and graciously donated their time 

 to those identifications. Without their assistance, it would have been 

 impossible to compile the immense list of organisms contained in this 

 study. A list of these specialists and the groups sent to them is appended. 



