414 Scientific Intelligence. 
. 
than would be afforded by an actual coast-line uniting the Shetland 
No oe : 
currents, and unite with them in diffusi rl waters 
through its deeper portion. thus spreading itself, however, the 
gid water will necessarily mingle with the mas ter 
It may be questioned, however, whether the whole body of Are- 
tic water that finds its way through the channels just indicated, 
could scarcely have been derived from any other source than the 
tarctic area.* 
The unrestricted communication which exists between the Ant- 
arctic area and the great Southern Ocean-basins would involve, if 
the doctrine of a general Oceanic circulation be admitted, a muc. 
more considerable interchange of waters between the Antarctic 
. and Equatorial areas, than is possible in the Northern hemisphere. 
And of such a free interchange there seems adequate evi 
ian Ocean, as to be com b Capt. Maury to the 3 
- Stream of the North Atlantic.t C “ ly, it would appear from 
rved at ae depths would Se 24 
dings of the ‘Porcupine’ prove to 
> 
a 
we 
ws 
“ 
