the Trigonomehical Station Oh Humbles Muur, Yorkshiie. 263 



stations were determined by data extracted from the seventh 

 column of the above list. 



G. W. and 

 Bv rec' obs. 

 Byobs.atP.H 

 F. F. 



S. S. 



B. R. 



• E. S. 



Mean 



Corrected 

 Alt. ofR. M. 



R. M 

 990-3 



DS.rb. 

 [»8.5-8 



, <jf;oi 

 986-;s 



988-4 



988-0 

 1318-0 



G. W. and F. F. |G. W. and I. H. G. W. and 

 By ri obs. 1138-4 Ri obs. 67-^R'obs 

 Bvobs.atR.M. ] 142-9i P. 1 1. 



P.G.I 1.1.3-6 R.M. 



R. L. 1 1 3.3-4 P. G 



II. F. li;?9-5 II. L. 



B. R. 1141-8! «. S. 



— - K. M. 1!41-.5| 



E. S. 1 ] 40 () Mean 



L. B. 1140-4 



Corrected 



64-71 

 6,r0' 



69-8! 



(;.vi! 



64-6' 



I. H. 

 R. M. 

 F. F. 

 P. G. 

 R. L. 

 S. S. 

 K. M. 

 L. B. 



P. H. 



481 •4 

 473-3 

 485-9 

 480-2 

 480-8 

 476-7 

 483-3 

 4801. 

 475-0 



1139-2 Alt. I. H. 23780 Mean 479-6 



Alt. of G. W. 2306-4roi-rectcd 

 Alt. of F. F. 



1 1 39-2 Do.G.W.231 3-4 Corrected 

 1170-0 Alt.P.H. 1 



481-0 

 831-0 



I Do. ofG. \V. 2309-2 



!Do.G.W.2312-0 



The mean altitude of Great Whernside is consequently 

 2S10 feet; and we may state those of Ingleborough, Pendle, 

 Rumbles Moor, and of Vlasby Fell, at 2374|, 1829^ 1322, and 

 1171 feet, respectively. 



The difference of altitude of these mountains and the re- 

 maining stations being determined by-methods precisely simi- 

 lar, their heights above the sea were easily ascertained. It ap- 

 pears from the subjoined scale of errors, (or deviations ft-om the 

 rational mean,) wherein the multipliers denote the number of 

 stations whence the difference of altitude was deduced, that the 

 degree of accuracy obtained is quite sufficient to enable us to 

 assign to each observation the refraction due to it. As a further 

 confirmation of the correctness of the heights, I prefix the 

 altitudes of Fountains Fell as determined at the several stations. 

 The refraction was taken at its mean qtiantitv, and the result- 

 ing height noted without further correction" whatever. The 

 Fell is to the east of Pennigent, and nearlv in the centre of the 

 stations. 



By G. W. 2189-6. By L. B. 2191-6. Bv R. H. «? 189-7 

 By N. S. 2190-4. Bv E. 8. 2193-4. Bv I. 11. 2190-3 Bv 

 r. G. 2190-5. By R. L. 2190-6. Bv li. F. 2190-6. 



Rycloaf Hill 

 West Sittron 

 J^ast .Sittron 

 Raisegillhag 

 Pcnnifjpiit 

 l/ow Birks 

 Hard Flask 

 Kiliisev Modr 

 Syiiioii .ycat 



MI. 

 Ft. 'i'eiiths. 

 0-0 x5 

 0-7- 2 ' 

 0-8- 2 I 

 0-9 + 

 0-2+ 



0-7+ 



0-7 + 



0-2 + 



oa- 



G. w. 



V. V. 



p. II. 



Ft. Tenths. Ft. Tenths. Ft. Tenths, 



00 x8 

 0-5+ 4 

 0-9 + 

 0-8- 

 0-3 + 

 0-3- 

 2 + 

 1 + 

 4- 



0-7 X n 

 0-4 + 

 0-1 + 

 00 



1-1- 



O-l- 

 0-2- 

 0-4- 



0-if+ 



00 X 6 



1-2- 

 0-2— 

 0-2+ 

 0-6- 

 0-3- 

 0-3- 

 0-C- 

 0-0- 



1-0+ X 3 

 0-2+ 2 

 0-0 2 

 0-4+ 3 

 0-4+ ,3 

 0-1- 3 

 0-8- 2 

 0-0- 2 

 00 .-) 

 Jt 



