temperature oi' — l.o^ and a salinity of ;5o.21 "/^o at 100 nieteis (T),") 

 fathoms) deptli flooded this place (m the slope. 



Station 3D() was (K-cupied April 15 at a point on the slope 5 miles 

 inshore of station 381, which had been located there three weeks 

 earlier. It will be i-ecalled that no si^ns of northern water were 

 discovered at station 381, only IT miles seaward of the edge of the 

 Bank and it was further surprising to find, at station 396, no water 

 colder than 3°. the temperature of local water as a result of the 

 1923-24: winter's chilling. The freshest water. 33.77 °/oo, was found 

 on the surface, while the greater depths were flooded by a mass 

 saltier than 34.46 ''/o^, all of which substantiates evidence that there 

 Avas no arctic water at this place on the slope. 



But at station 397, taken 19 miles inshore of the edge of tlu' 

 Bank in this latitude, the temperature of the snrface water fell 

 from 1° to a minimum of 0° at 15 meters (8 fathoms), and then rose 

 slightly to 0.2° on the bottom. It was 32.91 ^'/^p on the surface and 

 32.98 Voo on the bottom which is 0.10 to 0.20 "/,, saltier than the 

 water which lay over the Bank at station 383, about 45 miles to the 

 southward, and 23 miles farther inshore. 



The patrol continued northward, skirting the continental edge, 

 and took stations 398 and 399 at regular intervals as far as the 

 forty-sixth parallel. A subsurface temperature minimum of 0.4° 

 was recorded 42 meters (23 fathoms) below the surface at station 

 398, and a surface layer of 106 meters (58 fathoms) in thickness 

 contained water fresher than 34.00 "/oo- The coldest water found at 

 station 399 was on the surface, 0.7°, wdiich, besides being warmer 

 than that at 398, w^as also slightly saltier, although located the same 

 distance, 4 to 5 miles, offshore of the 100-fathom contour. The 

 salinities of these two stations satisfy arctic qualifications, but the 

 temperatures are too high to accord with those purely Arctic, yet are 

 loo low to be local. Considerable mixing and dissipation took place 

 at station 398, but in spite of this the temperature stratification 

 proves that a large proportion of the mixture was originally from 

 the far North. 



The outstanding features of the subsurface investigation were: 



(a) No water of Arctic origin lay offshore of the edge of the 

 Bank between 44° 30' and 45° 20', and very slight traces were found 

 even along the 100-fathom contour northward of this point to the 

 forty-sixth i)arallel. 



(b) Water colder than that just described and of unquestionable 

 Arctic origin, lay inshore of the edge of the Bank, however, at the 

 forty-fifth ]jarallel, in a strip about 40 to 45 miles in width, which 

 was connected southward to the coldest water found around the 

 Tail, the latter of which was bathing the edge of the Bank. 



