438 Mr. J.Nixon on the Trigonometrical Height 



same day by one either of the pole or church, the deficiency 

 was supplied from the mean of all those registered. 



At Cloiigha Pike | 



At Aqueduct Bank | ^ 

 At Aqueduct Bridge 2 



AtWartonCrag < j 



U 

 At Hutton-Roof 

 Moor 



2 0bs. 



3 — 



At Farleton Knot 



|3 - 

 L4 - 



Mean of ea»h day's obs. 

 Do. of all the obs. 



The altitude may be found exclusively from the depressions, 

 at Ingleborough, of Farleton Knot, Hutton-Roof Moor, 

 Clougha Pike, and Lancaster church tower, together with the 

 elevations of the three stations above the pole, as measured at 

 the Breakwater and Hest Wall, and that of the church tower 

 as determined by levelling, &c. 



By obs. of Farleton Knot .... 2332-5^ 



Hutton-Roof Moor 2332-1 \^j ^^„^ . n . 



Clougha Pike .... 2332-8 f ^^''^"' ^^^^'^ ^^^^' 



Lancaster Church . 2332-6J 

 Giving the due weight to the different methods, the height of 

 Ingleborough above the top of Hest Breakwater Pole may be 

 considered as 2333 feet. 



Height of Hest Breakwater Pole above the Tides, 



Having filled up by interpolation the eight blanks in the 

 given list of the observed heights of the Pole top above high 

 water, from July 7 to August 7, 1832, the mean will be 

 26 ft. 8 in. By Holden's Tables, which are founded on five 

 years' observations at Liverpool, and are considered very 

 exact, the predicted mean height of the (day) tides within the 

 same period is 14 ft. 10 in. above the old dock sill, which is 

 8 ft. 9 in. above the average low-water mark of spring tides, 

 and 1 ft. 9 in. above that of neaps. To render Holden*s heights 



