STORMS ON THE COAST OF NEW SOUTH WALES. 93 
I have one other variety of storm to place before you, if you 
will haye patience with me for a few minutes longer. It is that 
variety which brings us the most furious storms, but fortunately 
for us the direction $.W. to S. is not such a dangerous one for 
shipping as that of the S.E. gale. In this class we must place 
are caused by the polar wind rushing northwards, and being 
accele retad by some local cause they are often made more severe 
by the passage of one of those barometric waves from the south 
which so frequently pass over us. ould one of these arrive on 
the south coast when the 8.8. W. wind is blowing, it seems to give 
it new force and send the wind forward. If indeed we are not 
here confusing cause and effect, which I am very much disposed 
two currents tropical and polar; when the former prevails, pressure 
falls, and when the latter pressure increases, by the weight of the 
wind as well as its velocity, and such an impulse in an elastic 
fluid must go forward even if the air does not go with it. On the 
7th September, pressure was falling along the south coast, and 
the pail “ereging (29°460) is recorded at Hobart Town, at 4°30 
p-m. o 8th; on both these days, but especially on the 8th, 
all the erations taken in the four Colonies, South Australia, 
.W. was 
Australia. In New South Wales all ies barometers 
about 80 inches, and the weather was very hot; this warm win 
extended to the southern point of Tasmania during the morning, 
and the humidity at Hobart Town was down to 
BAROMETER riladirigh during the ‘‘ Dandenong” gale, September, 1876. 
Time, 9 a.m. 9th. 10th. 11th. 12th. 
so spoaeorat for 91 feet above sea...| 29°892 | 30190 | $80°081 | 29-736 
Adelai 30°015 | 30°242 | 30046 | 29°657 
Deniliquin 29°89S piste 807111 | 29°973 
Albury 29°877 ein iee 30°002 | 29°926 
29°847 | 29°883 | 30119; 29 
Cape St George “846 29°586 29°742 
Goulburn PIO cccis 29°971 | 29°935 
Bathurst PPO Fn ots 29°859 
Forbes 80°503 30°025 9°837 29°857 
fo 29 29°6' 29°710 
eweastle 29°583 | 29528} 29°721 
ale SUES fe eas 80°0388 | 29°983 
eee eae eee NS eee 
