128 



The Rev. Samuel Haughton on the Solar and Lunar 



Section XIII. — General Conclusions Respecting the Diurnal Tide. 



Having discussed in detail the Solar aud Lunar Diurnal Tides at each Station, 

 it now remains to make a few comparisons of the results obtained. An inte- 

 resting comparison of the Solar and Lunar Tide may be made at each Station, 

 with respect to the relative influence of the Sun and Moon ; with respect to 

 the Tidal Intervals and Establishment ; and with reference to the Age of the 

 Tide. 



L — Relative Effects of the Sun and Moon. 



Arranging our Stations in two groups, —Atlantic and Channel Stations, — 

 we form the following Table from the Constants previously given: — 



Relative Effects of the Sun. and Moon. 



The mean ratio of S to J/, here found, shows that the Sun's effect on the 

 Diurnal Tide is somewhat more than half the Moon's effect. In Mr. Airy's 

 discussion of the Semidiurnal Tides of Ireland, the following mean ratios of 5 

 to M are found :* — 



* Transactions of Royal Society for 1845. 



