Heights of the principal Hills of Szvaledale, Yorkshire. 193 



Great Pinch Yate above Pickington 



Height of Shunnor Fell 

 ■ Keasdon 



Feet. 

 2351-3 



1638-7 



Keasdon below Bakestone Edge. 



By obs- at Shunnor Fell 

 ■ reciprocal 



Mean 

 Height of Bakestone Edge 

 Keasdon 



284-5 

 283-9 



284-2 

 1923-2 

 1639-0 



Do. compared with Shunnor Fell 1638-7 

 Mean 1638-8 



Great Pinch Yate below Shunnor Fell. 

 By obs. at Water Crag 433-1 



■ Pickington Ridge 435" 1 



■ reciprocal 436-3 



Mean ~43T8 

 Height of Shunnor Fell 235 1 -3 

 Great Pinch Yate 1916-5 



Great Pinch Yate below Bakestone 

 Edge. 

 By obs. at Pickington Ridge 

 ' Water Crag 



Great Pinch Yate 



■ Shunnor Fell 



Meah 5-8 

 Height of Bakestone Edge 1923-2 

 Great Pinch Yate 1917-4 



5-3 

 5-6 

 5-9 

 6-4 



Ridge. 

 By reciprocal observations 

 By obs. at Shunnor Fell 

 ■ Water Crag 



Height of Pickington Ridge 

 Great Pinch Yate 



Feet. 

 59-3 

 61-9 

 62-2 

 Mean 61-1 

 1856-2 

 1917-3 



Great Pinch Yate below Water Crag. 



272-8 

 274-2 

 276-5 

 "274^5 

 2191-8 

 1917-3 



Do. compared with ShunnorFell 1916-5 

 Bakest.Edge 1917-4 

 Picking.Ridgel917'3 

 Mean 



By obs. at Pickington Ridge 



reciprocal 



at Shunnor Fell 



Mean 

 Height of Water Crag 

 Pinch Yate 



1917-1 



Height of Harker Fell. 

 By obs. at Harker Fell 



Shunnor Fell 



1531-4 

 1530-9 

 Mean 1631-2 



As the errors of measurement at Pickington Ridge are 

 (with one exception) constantly in defect, it would appear 

 that its height had been underrated nearly two feet, or that 

 the actual refraction there had been less than the estimated or 

 average quantity. To judge from the subjoined comparison 

 of its height, as deduced from the measurements made at the 

 place itself, and as calculated from observations at other sta- 

 tions, it may be inferred that the latter had been the case. 



Height of Pickington Ridge. 



Feet 



By obs. from Bear's Head 

 Penhill 



1853-9 

 1858-2 

 1857-5 

 18550 



- Pinch Yate 

 — — Water Crag 



Bakestone Edge 1856-3 



ShunnorFell 1855-4 



Arithmetical Mean 

 Rational Mean 



lSob-1 



1856-3 



By the Measurements there of its 

 difference of level with the fol- 



lowing stations : 



Shunnor Fell 



Water Crag 



Bakestone Edge 



Pinch Yate 



Nine Standards 



Arithmetical Mean 

 Rational Mean 



Feet. 

 1857-1 



1858-0 

 1858-8 

 1858-0 

 1858-3 

 1H58-0 

 1858-1 



Difference of the two methods 1*8 feet 



2 C 



N.S. Vol. 8. No. 45, Sept. 1830. 



Th( 



