100 



earlier, the latter part of March. Information was souglit as to the 

 chanojes. if any. which had taken place in the size and position of the 

 l)ody of polar water along the eastern face of the Grand Banks. A 

 section was next run from the central part of the Bank, near latitude 

 45° 00' north, eastward across the slope and oflfsliore into the body 

 of warm Atlantic water knoAvn to exist in that region at the time. 

 This is shown in section on profile Xo. 4. 



May 1-15 a total of 82 stations (431-463) were occupied as fol- 

 lows: 432-442 (profile Xo. 5), a line from Cape Race westward into 

 the Laurentian Channel, this being inshore of profile Xo. 3, and 

 taken to secure additional information as to the extent of Arctic in- 

 trusion, if any, in this locality off the south coast of Xewfoundland. 

 (See profile Xo. 5.) Stations 445-456 consist of short lines taken 

 normal to the southwest slope of the Grand Bank at four equally 

 spaced intervals from 44° 10' north, 52° 15' west, to the Tail. Sta- 

 tions 457-463 were occupied Maj' 8-16, and extend northward along 

 the eastern edge of the Bank to the east of St. Johns, Xewfoundland, 

 this being the third of the series, the two earlier ones having been 

 taken March 29 and April 23, respectiA'ely. May 15-31 a total of 

 8 stations were made. 3 of which (465-467) were distributed on the 

 northern part of the Grand Bank, while 5 were taken during a 

 cruise of the patrol ship along the east coast of Xewfoundland as 

 far north as the Strait of Belle Isle. 



May 29 station 473 was occupied, 20 miles south of Funk Island, 

 and June 12 subsurface observations were made at station 475. east 

 of Cape Race and near berg Xo. 3. June 25-29 a total of 22 stations 

 were so distributed as to constitute a comprehensive investigation 

 of the water mass covering the southern and western parts of the 

 Grand Bank. 



Sketch Xo. 5 gives a key to the order and distribution of oceano- 

 graphic work carried out during the 1924 season. 



STATIONS 377, 378. 379 



The salinity and tem])erature of the body of water lying along 

 the southwest slope of the Grand Bank was investigated as soon as 

 the patrol vessel ariived in tliat region. March 22-23, stations 377, 

 378. and 379 being spaced at regular intervals from the Tail north- 

 westward for a distance of 80 miles. 



The coldest water found along the slope was at station 378,^' it 

 ])eing colder than 0° " from a depth of 120 meters (66 fathoms) to 

 a dei)tl» of 180 meters (96 fathoms). The lowest temperature at 



" Wlion rcfening to stations, sec " Order of oceanographic stations, 1924," pp. 86-87. 

 " -Ml temperatures in tbis chapter :ire eeiitigriide unless otherwise specified. 



