The standara station observations were 

 completed on July 24 and the vessel proceeded 

 to regular station 1, arriving on July 25. Ex- 

 cellent weather and sea conditions prevailed, 

 and all regular stations of the southern leg (1 

 througji 34) and special station 9 were occupied 

 by July 30, at which time the vessel returned to 

 Brunswick for supplies. 



Navy Hydrographlc Office: 



On August 4 the Gill departed Brunswick 

 to begin the northern leg. This leg of the cruise 

 was characterized by adverse weather and sea 

 conditions . All of the regular stations except 

 73, 74, 78, 79, and special stations 1 through 4 

 were occupied- -those not completed were 

 missed as the result of a hurricane passing 

 through the Cape Hatteras area. The last sta- 

 tion was occupied on August 12 and the vessel 

 returned to Brunswick on August 16. The cruise 

 track is shown in figure 3 . 



Nansen casts, meteorological observa- 

 tions, and bathythermograph lowerings (when 

 depth of water permitted), figure 4, were made 

 on all regular and special stations. Oxygen de- 

 terminations were performed aboard vessel. 

 Water samples were collected on each station 

 for analysis of salinity, but were limited to 

 every other station for nitrate, carbohydrates, 

 inorganic phosphate, total phosphorus, and 

 proteins (absence of a chemist for several 

 months caused such a backlog of samples from 

 Cruises 1 and 2 that ample containers to sample 

 entire Cruise 3 were not available). Oblique 

 plankton tows were made on each station with 

 the half -meter Gulf III sampler (or half-meter 

 silk net on special occasions), the continuous 

 plankton sampler was operated over a large 

 portion of the cruise route, and tows were made 

 between many of the stations with the Gulf LA 

 higji- speed sampler. Dip -netting was conducted 

 both during the day and at night under spotlights, 

 and feather or bone jigs were trolled between 

 stations for capture of larger fish . 



Scientific personnel participating in the 

 cruise were: 



I. Southern Leg 



U.S. Fish and Wildlife Service and 

 Cooperators: 



G. Hammond 



M. Lig^t 



C. W. Backus 



Senior Oceanographer 



Oceanographer 



Technician 



Office of Naval Research: 



S. R. Caller Head Biologist 



Dr. Charles J. Fish, Director, Narragansett 

 Marine Laboratory accompanied the southern 

 leg of the cruise, and made special plankton ob- 

 servations while the vessel occupied standard 

 station. 



U. 



Northern Leg 

 U.S. Fish and Wildlife Service and 

 Cooperators: 



W.W. Anderson 

 J.W. Gehringer 

 C.P. Goodwin 

 C.C. Bryant 



Chief Scientist 

 Fishery Biologist 

 Chemical Aid 

 Chemical Aid 



Navy Hydrographlc Office: 



G. Hammond 

 M. Light 

 W. Waters 

 C.W. Backus 



Senior Oceanographer 

 Oceanographer 

 Oceanographer 

 Technician 



EXPLANATION OF DATA SHEETS AND 

 TABLES 

 Oceanographic and Chemical 



Each of the items appearing on the sta- 

 tion data pages is explained below . All doubtful 

 data are indicated and were not used in the con- 

 struction of the curves from which the interpolated 

 values (standard depth values) were derived. Ob- 

 served values which were obviously false were 

 omitted entirely . A dash in a table means that 

 no value was available. Interpolations for standard 

 depth values for temperature, salinity, sigma-t. 



