516 HENRY A. HUNT. 
TYPES ; | 
OF fs 
c AUSTRALIAN WEATHER 
03 
—AIGG SS 
*y 
The passage of this anticyclone was an unusually rapid one, 
and is presented as portraying with a minimum number of charts 
the easterly motion of anticyclones over Australia. 
TYPE Il.—MONSOONAL RAIN STORM. 
This type is undoubtedly the chief rain agent in the Australian 
Continent. Monsoonal depressions or tongues may occur at any 
time of the year, but particularly between the months of September 
and April, and most frequently during January, February and 
March. The readings of barometers in the depression seldom fall 
very low, the grade from the surrounding areas to the centre of 
the tongue ranging from one to three-tenths of an inch generally; 
the depression may intensify, that is the tongues between ig) 
A y protrude further south anywhere during their pass? 
across Australia, but show a preference to do so after they - 
crossed central Australia, a fact which suggests that the hea 
interior has at least some influence in‘their development. 
When and wherever the tongue is well defined, rain certainly 
follows in its track, and thunderstorms as a wide spread 
‘simultaneous feature are never experienced without it. 
