MOVING ANTICYCLONES. 



now nearly north and south, and it has passed over the 

 mountains. No. 8. The anticyclone is over the sea between 

 Australia and New Zealand, and with its two axes nearly equal. 

 Such is the passage of an ordinary anticyclone. This one was 

 moving at the rate of four hundred and fifty miles per day, which 

 is somewhat above the average speed ; and by referring to the 

 diagrams it will be seen that its track is nearly straight, and from 

 west to east. The majority of such anticyclone tracks are bent 

 southwards in the middle, as if when the anticyclone reaches the west 

 coast range, which trends to south-south-east, it is deflected so as to 

 move to the east-south-east instead of east ; and that when it meets 

 the east coast range which trends to north-north-east the track is 

 again deflected by mountains and made to go east-north-east or 

 north-east. See illustrations of this in diagrams 11, 15, 17, 18, 

 19, and 20. 



Another feature brought out in the diagrams is the occasional 

 stoppage of the anticyclone. For instance, in diagram 12, track 

 C, the centre was about the same place from April 25th to May 

 1st. In No. 15 the track is remarkable, the anticyclone lasting 

 twenty-five days, although it moved every day. Of its kind, this is 

 the most remarkable one we have on record. 



Out of a total of forty-two anticyclones which passed over 

 Australia in 1891, six, or fifteen per cent., hesitated or actually 

 stopped in their forward motion. Table I. shows the number of 

 cyclones in each month since February 1888. 



TABLE I. NUMBER OF ANTICYCLONES IN EACH MONTH. 



