268 The Rev. S. Haughton on the Solar and Lunar 



Corn-town Tide, Table E. 



Difference of observed and calculated times of vanishing at high 

 water, expressed in lunar days. 



Age of lunar tide =6^ 22'». 



The agreement between theory and observation shown in the 

 preceding Tables is very satisfactory ; and were it not for the 

 difficulties presented in the low water observations, we would 

 consider the tides at Courtown well represented by the theo- 

 retical tides. This discrepancy between theory and observation 

 at Courtown is probably connected with the peculiarities of the 

 Courtown tides, which have been brought to light by the Astro- 

 nomer Royal in his discussion of the semidiurnal tide at this 

 station. 



Section XII. Diurnal Tide at Dunmore East. 



Having obtained the values of the diurnal tide for each day 

 at Dunmore, I calculated the constants from them in the usual 

 manner, and found, — 



I. Diurnal tide at high water. 



1. Maximum value of lunar tide for positive heights =0*22 ft. 



2. Maximum value of lunar tide for negative heights = 0"21 ft. 



3. Maximum value of solar tide =0'14ft. 



4. Diurnal solitidal interval =5^^ IS"". 



5. Age of lunar tide =5^ IQ''. 



II. Diurnal tide at loiv water. 



1. Maximum value of lunar tide for positive heights =0*1 8 ft. 



2. Maximum value of lunar tide for negative heights =:0'19 ft. 



3. Maximum value of solar tide =0'14ft. 



4. Diurnal solitidal interval =5'* 15"". 



5. Age of hinar tide =5^ 14^. 



