124 The Rev. Samuel Haughton on the Solar and Lunar 



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 =0-14 ft. 

 4 Diurnal Solitidal Interval =5'' IS". 



5. Age of Lunar Tide = 5" 19\ 



II.— Diurnal Tide at Low Water. 



1. Maximum value of Lunar Tide for Positive Heights = CIS ft. 



2. Maximum value of Lunar Tide for Negative Heights = 0-19 ft. 



3. Maximum value of Solar Tide =0-14 ft. 



4. Diurnal Solitidal Interval = 5* 15". 



5. Age of Lunar Tide = 5" U\ 



Adding together the first two of each of the preceding, we find, 



Range of Lunar Tide at High Water = 0-43 ft. 

 Range of Lunar Tide at Low Water = 037 ft. 



Hence, by equation (3), 



cot(™-0 = ^ = cot(40M3'), 



or, converting the arc into time, 



w,-L=2M8'"; 



but since m, the Moon's Hour-angle at High Water, expressed in Dunmore time, 



is 4'' 36"" ; we obtain, 



i„=l*48". 



By equation (4), we have 



Maximum value of 2M sin 2/. = ^JWW+W^' = ^'^^'^ ^^ 



From which we obtain 



J/^ 0-441 ft. •, 



