4 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 19 



ACKNOWLEDGEMENTS 



This program has been supported by Captain Allan Hancock, Direc- 

 tor of the Allan Hancock Foundation of the University of Southern 

 California. Captain Hancock has taken an active interest in the project 

 and accompanied most of the cruises. The field work was performed by 

 participating members who were largely members of the Foundation 

 or the University faculty, and zoology students. The technical problems 

 of constructing and adjusting suitable equipment were solved by the 

 Engineer, Alex Campbell, and his stafif on the Velero IV. The ship was 

 maneuvered in position by Fred Ziesenhenne so that chosen points were 

 accurately found; he has also had charge of recording all terrestrial 

 positions for the charts. During the second half of the survey, Dr. Floyd 

 E. Durham has had charge of field operations. The photographs of the 

 submarine scapes were made with the benthograph operated from the 

 Velero IV. Dr. K. O. Emery and staff of the Geology Department of 

 the University provided data on temperature and some physical properties 

 of the San Pedro Basin. 



Identifications of animals were made by various authorities. Dr. J. 

 Laurens Barnard is responsible for the phoxocephalid amphipods ; Keith 

 Woodwick determined the enteropneusts and most of the polydoriid 

 polychaetes; Dr. Norman T. Mattox was consulted for the mollusks. 

 Other determinations, except those indicated below, were by the writer. 



