1884.] 



of the Bay of Bengal in 1883. 



175 



indicate that the cyclonic circulation was completely broken up, and that 

 fine weather, with moderate winds, and a slight sea, obtained at that hour 

 in the north-east of the Bay, over which the cyclone had previously 

 advanced. The disturbance passed so completely away on the 14th that 

 normal north-easterly winds were re-established over the greater part, 

 if not the whole, of the Bay, on the morning of the 15th. The storm 

 hence was generated and dispersed between the morning of the 10th 

 and the evening of the 14th. 



The following are a few of the more important points in connection 

 with this cyclone. 



One of the more remarkable features, which has already been dis- 

 cussed, but which deserves special mention, was the change which 

 occurred when the cyclone approached the Burmese coast. Whatever the 

 explanation may be, there can be no doubt of the facts. 



The following table gives approximately the position of the centre at 

 noon on the various days, and the distance passed over by it in the 

 preceding 24 hours : — 





Position of Centre. 



Distance passed 

 over in pre- 





Latitude. 



Longitude. 



ceding 24 

 hours. 



11th 



13° 30' 

 15° 30' 

 16° 10' 



20° 0' 



94° 15' 

 93° 0' 

 93° 0' 

 93° 30' 





12th 



160 miles. 



13th 



47 „ 



14th 



275 „ 







It will thus be seen that, between noon of the 12th and 13th, the 

 storm centre began to recurve, and only advanced a distance of about 

 50 miles, as compared with 160 miles during the previous 24 hours, and 

 275 during the succeeding 24 hours. The only apparent explanation 

 depends on what I have already suggested as probable, namely, that the 

 cyclonic action extends through very different heights in difFerent 

 storms. In the storms of the rains proper, it is almost certain that the 

 condensation, and therefore the seat of the disturbance, is at a much 

 greater elevation than it is in storms formed during the October Tran- 

 sition period. In the latter case, the storms appear to be generated 



