CHAP, VII. ] DEEP-SEA TEMPERATURES. ale 
border of the cold area, temperature soundings were 
taken mainly with a view to define its southern limit, 
and they are sometimes on one side and sometimes on 
the other. The general result is indicated on Plate 
IV. by the southern border of the shaded space. Nos. 
87 to 90 are once more in the warm area, the water 
reaching a depth of upwards of 700 fathoms, but 
maintaining, after the first 500 fathoms, a tempera- 
ture of from 6° to 7° C. above that of corresponding 
depths in the cold area. At Station 87, lat.59°35'N., 
long. 9 11’ W., with a depth of 767 fathoms, a serial 
sounding was taken, which contrasts remarkably 
with the series at Station 64. The general result of 
this sounding is represented diagrammatically by 
Fig. 56. The temperature was taken at every 100 
fathoms after the first 200. 
RAC ORMOAEE 00 tata aa Se ol Mog" ee ALG. 
SOGEVUIMOMIS, sj... Seale Sk hier 
HOO >, opnoms 
M5O= 4 os 
200... Oye 
a0 Uae» s, toler aL 
400 ; (RS 
D00y (Panes) 
600 —,, 61 
BOTs ‘sy ae! 
It will be seen by reference to the chart that two 
nearly parallel series of soundings were taken, ex- 
tending from the shallow water on the Scottish side 
to the edge of the Feroe Bank close to the western 
opening of the Fiéroe Channel, and that one of these 
chains, including Stations 52, 53, 54, and 86, is in 
the cold area, while the other chain of Stations, 48, 
