TYPES OF AUSTRALIAN WEATHER. 547 
marks their centres, and the rains come chiefly from the low 
pressures between each pair of anticyclones, and the strong 
westerly gales are but part of the circulation about these high 
pressures. (See Charts 29 and 30.) 
The one selected for illustration occupied the whole of Australia 
on June 4th, 1895, Chart 36. Its form was remarkably sym- 
metrical, and in the central area the barometers read 30°6, which 
is somewhat unusual, hence the circulation is active, and in 
northern Australia where the trade wind adds force, it is very 
strong. Under the central influence of these great anticyclones 
the whole of Australia enjoys fine weather. 
TYPES % 
TUNE... 1085 
. 
oF 
AUSTRALIAN WEATHER ai 
0 
TY 
PE XIX.—SQUARE HEADED A DEPRESSION. 
is type j bene 
suficiont] cay ® variation of the usual , depression, but is 
c fats , 
ey om aracteristic to be placed by itself as a type or rather 
ence to — isobaric peculiarity, as may be seen by refer- 
» 18 that there is a flat top or square 
A, the usual form of. which is a sharp 
a marked feature of this is that under 
arkably squally and charged with thunder 
