465 RAROMETER OFF CAPE HORN: 
northward, causing a fall of the mercury from 29:90 to 
29-56. On the day of full moon the column rose, and we had 
a beautiful morning, during which the high mountains of Staten 
Island were quite unclouded, as were also those of Tierra del 
Fuego. At noon, however, a fresh gale from the 5.W. set in, 
and enveloped the land with a dense mist. No sooner had the 
wind changed, than the mercury rose to 29°95, but fell again 
the next morning; and with the descent the wind veered round 
to N.W., and blew strongly with thick cloudy weather and 
rain, which continued until the followmg noon, when the wind 
veered to S.W., the barometer at 29°54, having slightly risen ; 
but after the change it fell, and continued to descend gradually 
until midnight, when we had a fresh gale from W.S.W. 
When this wind set in, the mercury rose, and continued to 
rise, as the wind veered without decreasing in strength to 
S.S.W., until it reached 29°95, when it fell again and the 
weather moderated, but without any change of wind. During 
the descent of the mercury, the sky with us was dull and over- 
cast, with squalls of wind and rain, but on shore it seemed to 
be very fine sunshiny weather. 
The column now fell to 29:23,.and during its descent the 
weather remained the same, dull and showery ; but as soon as 
the mercury became stationary, a fresh breeze set in from the 
southward, with fine weather. 
After this to new moon the weather was very unsettled, 
the wind veering between South and W.S.W.; the barometer 
rising as it veered to the former, and falling as it became more 
westerly ; but on no occasion did it precede the change. 
The mean height of the barometer is about 29:5. 
The mercury stands lowest with N.W. winds, and highest 
with S.E. 
With the wind at N.W. or northerly the mercury is low; 
if it falls to 29 inches or 28°80, a S.W. gale may be expected, 
but it will not commence until the column has ceased to de- 
scend. It frequently, however, falls without being followed by 
this change. In the month of June, at Port Famine, the 
barometer fell to 28-17, and afterwards gradually rose to 30'5, 
PGP 
