612 Meteorological Obfervations. 
fometimes confift of South-weft air which had 
pafled- by us or over us, driven back by a new 
accumulation of air in the North. Thefe laft 
continue but a eh or two, and are attended 
with rain. 
Sourn-West Wino confifts of air flowing 
from the South, ahd feems occafionally abforbed 
-at its arrival to the northern latitudes. It has a 
real direction from the weft, owing to its not 
having loft in its journey the greater velocity 
it had acquired from the earth’s furface from 
whence it came. Thefe winds are analogous 
to the monfoons between the tropics, and fre- 
quently continue from four to fix weeks toge- 
ther, with a low barometer, and rainy weather. 
2. They fonretimes confift of north-eaft air, 
which had paffed by us of over us, which 
becomes retrograde by a commencing deficiency 
of air in the north. Thefe winds continue but 
a day or two, attended with fevere froft with 
‘a finking barometer ; their cold being increafed 
by their expanfion as se return into an in- 
cipient vacancy. 
Norta West Wrnps contift firft, of South- 
weft winds, which have paffed over us, bent 
down and driven back towards the fouth, by 
the newly generated northern air. ‘They con- 
tinue but a day or two, and are attended with 
tain or clouds. 2. They confift of north-eaft 
winds, 
