82 STORMS ON THE COAST OF NEW SOUTH WALES. 
the fact, but it passed over so — that there would not be 
time to get the heavier air in motion below it, impeded as such an 
effect would be by surface friction. And further, in proof 
siderable size were in sight, and they pinicakad the appearance 
of a mass of cumulus onda; "Tolied up, the sides being shaped 
great meteor stream on 13th and ith of that sone 
We have still another form of summer storm which is common 
enough in its milder forms, and at times rises to the danger pitch, 
but as ~ will be impossib bhe besgien the — of this paper to give 
many examples, I must select or two that are typical and 
leave is rls imagination or spear ate that are of less con- 
sequence to us in tracing the causes of our storms. 
This form is the summer easterly — commonly known as 
the black north-easter; that is, a strong N.E. wind, that blows 
roe : bec 
direction is generally inclined to the coast ; so that a vessel can 
beet a off, ae the winter easterly blows from E. to 8.E., fair on 
he coas 
But to os to the selected example. On the 17th ae 
1873, ae barometer at 30°01, weather very fine and 
12 v ; 
breeze ter very é 
barometer 29°98, hot and cloudy, N.E. rena ; 20th, barometer 
