KOYAL ASIATIC SOCIETY. 



85 



Tables Illustrative of the Rise and Fall of the Calany river 

 during 1843, 1844, 1845 and 1846. By John Capper, 

 Esq,— (Read 22nd May, 1847.J 



The Diagram which I now lay before the Society, is in- 

 tended to shew at one view/ the rise and fall of the Calany 

 Ganga, and has been compiled from a Kegister kept at the 

 Bridge of Boats by the Sergeant in charge of the Establish- 

 ment there, and which Register is filled in daily, accompanied 

 by notes relative to the state of the weather. 



In drawing this up I had two objects in view; to ascertain 

 the existence and extent of any Tidal influence on the river, 

 and also to determine what connection existed between the 

 extreme heights of the river and the various phases of the moon. 



A careful analysis of the daily registrations has left me 

 without any satisfactory conclusions as to the actual influence 

 of the Tides upon the fluctuations in the height of the river. 

 The rise and fall occur with such extreme irregularity as to 

 forbid anything like a conclusion on this point, at the same 

 time I believe the Master Attendant of Colombo, Captain 

 James Steuart, made a series of observations a few years back, 

 which prove the existence of Tides along our shores, and if I 

 remember rightly, the extreme rise at high water was about 

 2| feet. 



Almost as unsatisfactory has been the result of the inquiry 

 as to the connection supposed to exist between the moon's age 

 and the change in the weather, as experienced in the swelling 

 of the stream of the Calany. 



In the accompanying Diagram the figures representing 

 the moon in her four phases, are placed as nearly as could be 



