Atomic Energy Commission (Dr. Robert J. 

 Buettner, U. C. L. A.-A. E. C. project) (table 1). 



d. At 31 of the oceanogr aphic stations one 

 to seven 200-ml. water samples (total, 86) were 

 taken from the upper 125 meters for phytoplankton 

 studies at Scripps Institution of Oceanography 

 (Mr. Robert N. Holmes) (table 1). 



RECORDS 



The following records were kept and 

 are on file at POFI, except as otherwise noted 

 in parentheses after the item: 



Original oceanographic data "Log Sheet A" 



Bathythermograph log sheet "B" (duplicates 

 at Scripps Institution of Oceanography) 



Field plots of BT temperatures 



Chemical data sheets 



BT slides (Scripps Institution ofOceano- 

 graphy) 



Thermograph records 



Track charts 



Deck log 



Occurrence of tuna schools and bird flocks 

 log 



Plankton log 



Flowmeter and plankton sampler calibra- 

 tion log 



Surface trolling log 



Scientist's log 



U.S.W.B. Form 121 OF (U.S. Weather 

 Records Center, Asheville, N. C.) 



EDO depth recorder charts (U.S.N. Hydro- 

 graphic Office) 



Short form tuna morphometric sheets 



Thermometer arrangement forms 



Night-light fishing log 



Trawling log 



Barograph records (U.S.W.B.) 



PERSONNEL 



Albert L. Tester - Director, POFI 



Garth I. Murphy - Assistant Director; Chief, 



Research and Development, POFI 

 Albert K. Akana - Marine Operations Super- 

 intendent 



Field Parties 



Hugh M. Smith 



B. Collinson, Master 



J. W. McGary, Oceanographer - Field 



Party Chief 

 F. Edvalson, Hydrographic Engineer 



(USNHO) 



E. C. Jones, Fishery Research Biologist 



E. D. Stroup, Physical Science Aid 



J. W. Van Landingham, Physical Science 



Aid 

 B. Wyatt, Fishery Aid 



J ohn R. Manning 



F. Barnett, Master. 



T. Otsu, Fishery Research Biologist - 

 Field Party Chief 



W. Matsumoto, Fishery Research Biolo- 

 gist 



Preparation of Data 



T. S. Austin, Oceanographer 



M. L. Godfrey, Physical Science Aid 



E. D. Stroup, Physical Science Aid 



E. Mendiola, Statistical Clerk 



T. Hida, Fishery Aid 



LABORATORY METHODS AND 

 TECHNIQUES 



A. Oceanographic data 



The analyses of samples drawn from 

 the Nansen bottles for dissolved oxygen and in- 

 organic phosphate were made aboard ship. Oxy- 

 gen concentration was determined by Winkler's 

 method. Duplicate determinations were made 

 for each sample; precision was in the neighbor- 

 hood of 0. 5 percent. Phosphate phosphorus con- 

 centration was measured with the use of the 

 Automatic Servo-Operated Photometer, as des- 

 cribed by Wooster and Rakestraw (1951). 



Concentrations of salinity in the 

 samples returned to the POFI laboratory were 

 determined by a new modification of Fajan's 

 adsorption indicator method developed at this 

 laboratory, and adapted to Knudsen's tech- 

 niques for sea water. Accuracy of the method 

 as based on standard (Copenhagen) sea water 

 is 0. 1 percent or greater; routine precision is 

 about 0.03 percent. 



The duplicate readings of the 

 protected and unprotected reversing thermo- 

 meters made aboard ship were reduced by 

 graphical methods to true water temperature, 

 with an accuracy of - 0.02 C. , and the ther- 

 mometric depth is combined graphically with 

 the wire length to give the accepted depth of re- 

 versal of each bottle. These methods are des- 

 cribed by La Fond (1951). 



