90 Tlie Rev. Samuel Haughton on the Solar and Lunar 



I. — Diurnal Tide at High Water. 



1. Maximum value of Lunar Tide for Positive Heights =0 50 ft. 



2. Maximum value of Lunar Tide for Negative Heights — OoB ft. 



3. Maximum value of Solar Tide =0-30 ft. 



4. Diurnal Solitidal Interval =11'' 25"". 



5. Age of Lunar Tide = 6'' 18" 41'". 



n. — Diurnal Tide at Low Water. 



1. Maximum value of Lunar Tide for Positive Heights = 0'355 ft. 



2. Maximum value of Lunar Tide for Negative Heights =0'45 ft. 



3. Maximum value of Solar Tide = 0-25 ft. 



4. Duirnal Solitidal Interval = 11" 25"". 



5. Age of Lunar Tide = 5'' 2* 45'". 



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



Range of Lunar Tide at High Water = 0-83 ft. 

 Range of Lunar Tide at Low Water = 080o ft. 



Hence, by equation (3), 



cot(«i-/.) = ^ = cot(44°7'), 



or, converting the arc into time, 



m - /„. = 3" 2'" ; 



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

 time is 10'' 18'"; we obtain, 



2;. = 7" 16'". 

 By equation (4), we have 



Maximum value of 23/ sin 2/x =^(0-83)' + (0-805)'= 1156 ft. 

 I'roui which we obtain 



i!f=0-88Ift. ; 



