522 HENRY A. HUNT. 
In Chart 9, the western anticyclone has extended northwards 
and has seriously contracted the diameter of the monsoonal low 
pressure, thereby facilitating or helping to cut off and start the — 
cyclonic storm in the south ; which has now developed a much 
steeper barometric grade and an energetic wind circulation, and 
is moving eastward without extending the rain area. 
Chart No. 10 shows comparatively little motion in the cyclone, 
but it is considerably distorted, especially to the west, where the 
anticyclone is compressing the isobars by its easterly progress and 
in its endeavours to maintain its rate has overridden the cyclone 
in the north. As will be seen by a glance at these three charts, 
the rain resulting from this storm was most extensive and bene- 
ficial, and the winds under its influences were strong. 
z TYPES 
oF 
é. AUSTRALIAN WEATHER 
Nol 
= APRIL It. 160% 
TYPE V.—CONDITIONS FAVORABLE FOR THUNDERSTORMS. 
Upon comparison of charts setting forth this type with those 
of cyclonic thunderstorms, they will be found very similar } the 
main difference being the absence in this set of the cyclonic -_ 
at the end of the monsoonal tongue. The chief feature indicating 
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