Diurnal Tides on the Coasts of Ireland. 125 



also, since the mean value of the Solar Tide is 0-14 ft., we have, by equation (5), 

 Max. value of 2S sin 2<r= 0-28 ft., 

 5'= 0-192 ft. 

 Combining the foregoing results, we obtain for the Tide Constants at Dun- 



and, 



more : — 



1. Lunitidal Interval = 1* 48". 



2. Sohtidal Interval =5'' 15"". 



3. Age of Lunar Tide at High Water = 5" 19*. 

 Age of Lunar Tide at Low Water = 5" 14*. 



4. L\mar Coefficient = 0-441 ft. 



5. Solar Coefficient = 0-192 ft. 



6. Ratio of Solar to Lunar Coefficient, 



or 4=0-436. 

 M 



The Theoretical Tides were constructed with the foregoing Tide Constants, 

 and compared with the observed Tides, with the following results: — 



D0NMOKE Table A. 



Comparison op the Observed and Calculated Didrnal Tides at Dimmore at High Water; 

 Positive Heights for Seventeen Lunations, commencing 1850, September 11'' 21'' 30"', and ending 

 1851, December 20"' 15'' 42'". 



