CANAIH.W /•7n///;A7/;.S hXI'Hn/TfOX, l-H'i ir, 359 



temperature below zero is found from 30m. over the banks, and GOm. over the channel, 

 down to about 125m., whence the temperature increases slowly to 2-4° C. at a depth 

 of 250ra. 



Section III.. Stations 19-26. 



This section runs from St. George bay, Newfoundland, to off Souris, Prince 

 Edward Island, over the eastern part of the Magdalen Islands bank, crossing the Lau- 

 reutian channel to the west of Cabot strait. 



Salinity. — The coastal water is restricted to the two southernmost stations, extend- 

 ing down to about 30m. at station 2(). The banks are covered by intermediate water, 

 which from station 24 occupies the surface with 31-water over the deep channel. 

 The bank water we find on the slopes towards the channel in a depth of 50-lOOm. 

 In the middle of the channel at Station 20 it is found at a depth from 70-140m., but 

 is again stowed up against Newfoundland. The 34 isohaline lies at a depth of about 

 240m., and at a depth of 400m. we have a salinity of 34-78 Voo. 



Temperature. — The temperature of the surface waters down to a depth of 20-30m. 

 is higher than 4° C, the highest readings being found in the south, where the tempera- 

 ture is about 7° C. The bottom on the banks is covered by water with temperatures 

 below zero. The upper 0° isotherm runs between 20 and 40m. over the banks, but 

 sinks to between 50 and 70m. over the channel. The lower 0° isotherm lies at about 

 100m. on the slopes of the southern banks, but sinks down to 130-140m. over the 

 northern part of the channel. The temperature increases again towards the deep 

 water, and in 400m. we find a temperature of 4-25°C. 



The salinity, as well as the temperature, seems to indicate an outflowing current 

 from the gulf towards the slopes of the southern banks, and an inflowing current in 

 the middle part of the channel, the changes being mostly restricted to the upper 100m. 



3. Steam Drifter "No. 33" (Juxe 25 to June 26). 



Section IV. Stations 21-26. 



This section was taken by the steam drifter No. 33 from the New Brunswick 

 coast to Anticosti island in order to show the changes in the sea further up towards 

 the St. Lawrence river. 



Salinity. — The salinity of the surface water increases from south to north from 

 23-07 at station 21 to 30-85*^/00 at station 24 near the Anticosti coast. At 20m. this 

 condition is reversed in the middle part of the channel, from 31-01 Voo at station 22 

 to 30-07 ^'/oo at Station 26. The coastal water thus in the middle of the channel 

 extends down to about 20m., while in the north the intermediate water is lifted up to 

 the surface. Bank-water in the main occupies the strata between 50 and 100m., though 

 somewhat deeper in the middle. The 34 isohaline runs at a depth of about 215m., and 

 at a depth of 380tn., near the bottom, we have a salinity of 34-72 Voo. 



Temperature. — The surface temperature is fairly uniform, from 7-0°-8-9° C, 

 but in the southern part of the section it falls very rapidly down to 20m., while in the 

 rest of the section the decrease is greater between 20 and 25m. The layer between 

 50 and 100m. has a temperature below zero, and the limits of the water of negative 

 temperature follow very closely the isohalines limiting the bank-water. From 100m. 

 downwards the temperature increases very slowly to about 4-5° C. at 350-380m. 



After this the principal changes seem to be restricted to the upper strata with an 

 outflowing surface current along the southern coast, causing a reaction current in the 

 opposite direction at a depth of about 20m., while along the Anticosti coast the current 

 seems to be inflowing-. 



