by quiet foggy weather up to this time. During the 20th, however, there 

 was promise of good visibiHty, somewhat marred by occasional showers. 

 Various searching courses were therefore run in the vicinity of the 

 Labrador Current north and northwest of the area surveyed. No ice 

 was found and a course was laid for St. John's, with arrival there on 

 May 22. 



For the purpose of making a third current survey of the Grand 

 Banks region, the General Greene left St. John's on July 3. A map extend- 

 ingtfrom the Tail of the Grand Banks to latitude 46° w^as planned, and 

 collection of data began at station 3482, located at 43°19 ' N., 50°08 ' W., 

 on July 4. The last station, number 3539, located at 46°07 ' N., 44°50 ' 

 W., was completed on July 14. The first half of the cruise was character- 

 ized by good visibility and the second half by almost continuous fog, 

 with quiet weather throughout. From the position of the last oceano- 

 graphic station, various courses were run in the vicitiny of the Labrador 

 Current north and northeast of the Grand Banks, with intermittent 

 periods of good visibility on July 15 and good visibility during most of 

 July 16. No ice was sighted and a course was laid for St. John's, which 

 was reached on July 17. 



As described in the foregoing, 195 oceanographic stations were occu- 

 pied during the ice patrol season. An additional 36 stations were occu- 

 pied on a short postseason cruise in the southern part of the Labrador 

 Sea between Labrador and Greenland. Of these, 12 stations were in the 

 immediate vicinity of an iceberg off the Strait of Belle Isle and the 

 remaining 24 were disposed in the form of a section extending from 

 South Wolf Island, Labrador, to Cape Farewell, Greenland. The 

 temperature and salinity data collected at these 231 stations are pre- 

 sented in tabular form at the end of this bulletin. 



The types of equipment and methods of measurement were the same 

 as in the past several years, with the temperature measurements being 

 supplemented by bathythermograph observations. Calibration titra- 

 tions and part of the supervisory work was performed by Associate 

 Physical Oceanographer Clifford A. Barnes. Routine salinity bridge 

 measurements were made by Soule, Barnes, and Kenneth M. Eldridge, 

 surfman. Other assistants in the observational work were Thomas C. 

 Crabe, yeoman first class; Alton F. Phillips, surfman; LeMar D. Scott, 

 seaman first class; and Walter C. Mulloy, seaman second class. At the 

 195 stations occupied during the season, the extent and nominal depths 

 of the serial observations of temperature and salinity were the same as 

 during previous seasons. During the post-season cruise the measure- 

 ments extended to as near bottom as was practicable, except that at the 

 12 stations in the vicinity of the iceberg the depths of observation were 

 nominally 0, 10, 20, 30, 40, 60, 80, 100, 125, and 150 meters. 



In order to check on the functioning of the reversing thermometers, 

 a program of intercomparison was again carried out by making periodic 

 shifts in thermometer pairs. A total of 1,432 individual comparisons 



