—" 
1906. No. 3. AMUNDSEN'S OCEANOGRAPHIC OBSERVATIONS IN 1901. 49 
bottom-water is found no more; it gradually mingles with the overlying 
warmer water; and has thus no communication with the cold bottom- 
water of the Norwegian Sea. It is nevertheless interesting to notice 
how similar Amundsen’s bottom-water at Stat. 11 (with about —1-4° C. 
and 3493 oo), is to the bottom-water he found in the Norwegian Sea 
east of Greenland (about —1°3° C. and 3492 °/,,). It shows how cooling at 
the sea-surface during the winter, may produce, by the same process, 
very similar results in very different regions, and in seas with very 
different depths. 
The bottom-water of the central hollow of the eastern Barents Sea 
may, however, have very different temperatures in different years. In 
July 1899, its temperature was about —1'8 or —ı'9° C. (Knipowitsch’s 
Stations 68—701, in about 73° and 72° N. Lat. and 39° 12’ and 40° 
38’ E. Long.). 
In July (10) and September (28), 1900, the temperature in the deepest 
central part of the hollow was about —r1'3 and —1°5° C. (Knipowitsch’s 
Stations 254 and 365°. 
In July and August, 1901, the bottom-temperatures seem to have 
been about —1'4 or —1°5°C. according to Knipowitsch’s sections3. 
In August 1902 the bottom-temperature was in all parts of the 
central hollow about —1'3 and —ı"4°C, (see Table above, p. 22). 
I May and August, 1903, it was about freezing point, —1'85 and 
18° C. (see Table above, p. 22). 
I May and August, 1904, it seems to have been about the same. 
—r'8 and —ı'75°C. (see Table, p. 22). 
The salinity seems to be very frequently about 34'94 (cf. 1903 and 
1904), and to be fairly uniform for the bottom-water of the whole of the 
Hollow, at least in the same year. But a thin bottom-layer has often 
salinities above 35°0 0,- 
Possibility of communication between the cold Bottom- Water of the North- 
eastern Barents Sea and that of the North Polar Basin. 
There is much similarity between the salinity of the heaviest bottom- 
water of the eastern and northeastern Barents Sea, and the salinity of 
the bottom-water of the North Polar Basin, according to the values 
Knipowitsch, Exp. fir wissensch.-pracktische Untersuchungen an der Murman Küste, 
vol. I, pp. 322-3323. 
? Ibid. pp. 448, 482. 
Ann. Hydr. etc. 1905, Pl. 6, Figs. 5 and 3. 
Vid.-Selsk. Skrifter. I. M.-N. Kl. 1906. No. 3. 4 
