Bi rds, tuna schools, and aquatic mammals 



During daylight hours on all four cruises, 

 a watch was maintained for birds, tuna schools, 

 and aquatic mammals. Summaries of these ob- 

 servations are presented in tables 43 through 

 47 inclusive. 



Field party personnel 



Charles H. Gilbert - William T. Tanaka, 

 Master 



Personnel processing samples and data 

 (In addition to the authors) 



John W. Van Landingham, Physical Science 



Aid 

 Thomas M. Okano, Physical Science Aid 

 Mary Lynne M. Godfrey, Physical Science 



Aid 

 Betty Ann L. Keala, Statistical Clerk 



LITERATURE CITED 



Cruise 35 



Robert C. Wilson, Field Party Chief 

 Eugene L. Nakamura, Fishery Re- 

 search Biologist 



Cruise 38 



Tajnio Otsu, Field Party Chief 

 Howard O. Yoshlda, Fishery Re- 

 search Biologist 



Hugh M. Smith - Barnes Collinson, Master 



Cruise 43 



Donald W. Strasburg, Field Party Chief 

 Richard N. Uchida, Fishery Research 

 Biologist 



Cruise 45 



Joseph E. King, Field Party Chief 

 Murlce O. Rinkel, Oceanographer 

 Richard J. Hansen, Fishery Aid 

 John W. Van Landingham, Physical 



Science Aid 

 Takuji Fujimura, Collaborator, Hawaii 



Division of Fish and Game 

 Stanley I. Shima, Collaborator, Hawaii 



Division of Fish and Game 



LABORATORY PROCEDURES 



Salinity and Phosphate determinations 



The salinity samples were analyzed by a 

 modification of the method of Knudsen {Van 

 Landingham 1957). The inorganic phosphate 

 samples were analyzed by the hydrazine sul- 

 phate modification of Denige's method (King 

 et al. 1957). 



Zooplankton 



Details of the method for determining 

 displacement volumes of zooplankton are des- 

 cribed by King and Hida (1957). 



AUSTIN, T. S. 



1957. Summary, oceanographlc and fishery 

 data, Marquesas Islands area, 

 August-September 1956 (EQUAPAC). 

 U. S. Fish and Wildlife Service, 

 Spec. Scl. Rept. --Fish. No. 217, 

 186 pp. 



JUNE, F. C. 



1951. Prelinninary fisheries survey of the 

 Hawaiian-Line Islands area. Part 3 - 

 The live -bait skipjack fishery in the 

 Hawaiian Islands . U. S. Fish and 

 Wildlife Service, Comm. Fish. Rev. 

 13(2): 1-18. 



KING, J. E., T. S. AUSTIN, and M. S. DOTY 

 1957. Preliminary report on expedition 

 EASTROPIC. U. S. Fish and Wild- 

 life Service, Spec. Scl. Rept. --Fish. 

 No. 201, 155 pp. 



, and JOAN DEMOND 



1953. Zooplankton abundance in the central 

 Pacific. U. S. Fish and Wildlife 

 Service, Fish. Bull. 54(82) : 111-144. 



and T. S. HIDA 



Zooplankton abundance in the central 

 Pacific, part II. U. S. Fish and 

 Wildlife Service, Fish. Bull. 57(118): 

 365-395. 



1957 



KNAUSS, J. A., and J. E. KING 



1958. Observations of the Pacific Equa- 

 torial Undercurrent. Nature 182: 

 601-602. 



MANN, H. J. 



1955. Construction details of Improved tuna 

 long - line gear used by Pacific 

 Oceanic Fishery Investigations. U. 

 S. Fish and Wildlife Service, Connm. 

 Fish. Rev. 17(12): 1-10. 



