306 



THE SCOTTISH NATIONAL ANTAKCTIC EXPEDITION. 



of the circle, so there can be little doubt that the Antarctic anti-cyclone extends more to 

 the north as we proceed east, but is subject to seasonal oscillations. This is as Supan 

 has supposed. 



The wind circulation in the vicinity of Graham's Land is of interest, as the west wind 

 system disappears in comparatively low latitudes, showing that this region south of 

 64° S. is probably under the influence of the south polar anti-cyclone. 



The following table shows the mean annual percentage frequency of the winds at 

 several places (see Plate IV.) : — 



It will be seen that in the region of the "Belgica's" drift there was no very pronounced 

 maximum of wind frequency from any particular quarter. It is different, however, at 

 Port Charcot and Snow Hill, where, during half the time, the wind was blowing from 

 S. and S.W., with a secc 

 percentage of calms incr 

 the austral regions are v 

 is usually steep and ca 

 west winds are feeble, an 

 the skies clear ; the nor1 

 warm, causing the tempe 

 north-east winds point 1 

 the station in about 64' 

 of pressure to the south, 

 the sea on the east sid 

 cyclone, as it is seldom 

 .xnti-cyclone is a widesp 

 continent. 



