below the surface in watei' (lei)llis of 42 falliojiis, 475 fathoms and 

 980 fathoms. '^Fhese meters wei-e intended to record the speed and 

 direction of the Labrador (^urrent as it thictuated in space and time. 

 These experiments will be described in a later bulletin. 



The Evergreen departed Argentia, Newfoundland, on the afternoon 

 of 8 June to participate in a search for a fishing dory missing on the 

 Grand Banks. It was concluded that the dory had been run down in 

 the fog. After several days of searching, the case was closed and 

 the Evergreen proceeded to the first station of the fourth survey 

 arriving on the early afternoon of 14 June. The area covered was 

 similar to that covered in the second survey and also included the 

 Bonavista triangle. Data collection was completed during the night 

 of 22 June, where upon the Evergreen, en route to Argentia, checked 

 the positions and condition of current meter moorings. 



The Evergreen departed Ai'gentia, Newfoundland, on the afternoon 

 of 2 July to begin the postseason oceanographic survey which included 

 an occupation of the Bonavista triangle and a section across the 

 Labrador Sea from South Wolf Island, Labrador, to Cape Farewell, 

 Greenland. The triangle, consisting of 30 stations was completed on 

 the afternoon of 6 July where upon the Evergreen proceeded to South 

 Wolf Island arriving at the first station, number 7928, on the next 

 day. In addition to the normal work of collecting temperature and 

 salinity data on the Labrador Sea section, oxygen determinations were 

 made for all depths at all stations occupied, excluding only surface 

 samples. A total of 508 determinations was made using a modification 

 of the Winlder method. The results will be discussed in a later section 

 of this bulletin. The final station, number 7950, was occupied on the 

 evening of 11 July, 6 miles off Cape Farewell. There were no inter- 

 ruptions or unusual delays during any of the 1961 surveys. 



The oceanographic work was under the supervision of Ocean- 

 ographer Alfred P. Franceschetti who was assisted by Lt. R. \I. 

 O'Hagan. Other assistants in the observational work and reduction 

 of data included R. C. Norris, aerographer's mate first class; F. N. 

 Brown, yeoman first class; D. P. Wagner, aerographer's mate second 

 class; R. C. Bowden, aerographer's mate second class and J. A. 

 Senef elder, seaman aerographer's mate. 



Temperature and salinit}'^ observations were made at each of the 362 

 stations. At the 23 stations forming the section across the Labrador 

 Sea, the observations extended from the surface to as near the bottom 

 as was practicable. At the remaining stations, the observations were 

 hmited to the upper 1,500 meters. The intended depths of observa- 

 tions, in meters, were 0, 25, 50, 75, 100, 150, 200, 300, 400, 600, 800, 

 1,000, and thence by 500-meter intervals. 



Tem|)eratures were measured with protected deep sea reversing thermom- 

 eters, mostly of Richter & Wiese manufacture, but with some manu- 

 factured by Negretti & Zambra, Q. M. Manufacturing Company and 



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