216 NOTES ON SOME RECENT BAROMETRIC DISTURBANCES. 
Discussion. 
Mr. Cone: ‘said: he was taking observations in connection 
with a ‘rigonometrial survey party near Carcoar when this 
storm occurred. They were on the odes edge of the storm. 
From LadPpaet 5 till 6 o’clock he was trying to see the station 
at Carcoar, but could not see it; the storm-cloud was then 
passing-over Carcoar. He was a little to the: east of the station. 
: What was on greatest velocity of the wind 
registered at the Observato 
» Mr. Russet: 153 miles an 6 
Mr. Scorr: Then the rate at @hich the storm appeared to 
travel was not improbable. The increased atmospheric pressure 
fe be produced by the thunder-cloud ; the action of 
the cloud could a be compared to that of a ship passing through 
water, as the cloud was carried by the wind, and did not drive 
fai along the coast on the afternoon of the storm ‘séald not 
fo) t 
‘theo: pace aise t for some of the barometrical changes; but 
. . b . 
certainly be by the meeting and mixing of two winds. 
Take the thunder-storms that rose here from the south-west: we 
eces, t 
The Crarrman asked if dry seasons had any influence in the 
formation of these frequent thunder-storms. His experience was 
that in dry seasons thunder-storms were frequent. In moist 
seasons we had never had thunder-storms at all. 
bad & 
