340 Harmonic Analysis of Tidal Observations. [June 19, 



M 2 . S 2 . K 2 . N. L. KI. O. P. 



Increment in 40 d 4647 78 '9 - sf-9 -452 '7 39 '4 425 '3 



Ditto6 d -146-3 11-8 -224'7 - 67 '9 5 '9 - 152 '2 (see K,) 



Time = -120 (^^\ = -120 m x = -12 m = ll h 48 m A.M. 



336 



Tabular time = O h 7 P.M. 

 Error = -19 ra . 



A 2 + AI = 4-42 

 Mean water + 8 '54 



Height = 4-12 



Height L.W 4 ft. 1 in. 



Tabular height 4 



Error +1 



In the second case referred to above, the calculated height is 

 13 ft. 6 in., and the tabulated height 13 ft. 3 in., and the error in time 

 is I5 m . 



These results are as good as might be expected, and, considered as 

 a prediction, would be amply sufficient for navigational purposes. 



