ROYAL ASIATIC SOCIETY. 



175 



the west and north-west, drift rapidly to the north-east, passing 

 either over or a little to the north of the station, veer round to the 

 south, run down towards Chilaw, cross to the south-west, and then 

 returning again over Putlam, pass to the east and are lost in 

 the interior. Each storm thus visits the place twice, being gene- 

 rally much more violent on the second occasion than on the 

 first, as if Putlam were placed first in the centre of a circle 

 described by the storm and afterwards in the circumference of 

 the same circle, the whole series occupying from four to ten 

 hours. 



With reference to temperature, the registers are so unsa- 

 tisfactory, that I deem it unnecessary to give any thing more 

 than the general result, namely, that the highest temperature 

 mentioned in them (at noon) is 89° in April, the lowest 78° in 

 August ; the great majority of heights registered extend how- 

 ever only from 79° to 86°. 



From observations made by myself during the last four 

 months, I find the average temperatures at the times men- 

 tioned below to be as follows.:^— 



Months. 



9 a. m. 



Noon. 



3 p. m. 



Max. 



Min. 



Range. 





81-38 



83-07 



83-09 



85-75 



79-25 



6-5 





80-363 



82-786 



82522 



84-00 



73-00 



11-0 





80-33 



82-64 



82-52 



84-50 



76-70 



7-8 





78-15 



80-44 



80-65 



85-00 



72-00 



130 



Average ... 



80-056 



82-234 



32-196 









Entire range observed during these four months, 13-75° 



