124 FOKESTRY IN BRITISH EAST INDIA. 



Ill September the monsoon commences to decline, but in 

 Bengal, Assam and Burma the rains last well into October. In 

 the beginning of the latter month the winds in the western part 

 of the Bay of Bengal begin to blow from the north-east, and now 

 for the first time the hitherto scantily watered Carnatic receives 

 a copious rainfall ; these rains go on until December, when they 



Fig. 4. 



AVKKAGE ANNUAL 



KAINFAI.I, 

 or 



INDIA 





5ia 



} 



gradually move southwards to Ceylon. They are followed by a 

 dry, steady, north-east wind which gradually extends over the 

 whole Bay of Bengal and is known as the north-east monsoon. 

 An easterly wind at that period also takes possession of the 

 Arabian Sea. 



Meanwhile in Northern India the temperature, after a 

 temporary slight rise on the cessation of the rains, has fallen 

 rapidly during November and December, producing a cool air 



