634, The Account of a 



The distance from Hensbarrow to Carraton Hill, is 100416 

 feet, and from Butterton to that station 131576 feet. (See Phil. 

 Trans, for 1797, P- 45^> 460.) These data give the following 

 triangle, viz. 



Carraton Hill - - is^ 5^ 89" 

 Hensbarrow - - 24 35 57,5 



Butterton - - 18 31 2,3,5, which gives 



21602 feet, for the distance between Hensbarrow and Butterton 

 Hill. 



The angle between Carraton Hill and Rippin Tor was ob- 

 served in 1796, and found = 101 3' ^",25. (See Phil. Trans. 

 1797.) The angle between Hensbarrow and Rippin Tor is 

 11 9° 35' 3"t Q 5'i> therefore, 18 31' 19" is the angle between 

 Hensbarrow and Carraton. The difference between the hori- 

 zontal and chord angle is o",25 nearly; this, added to 18 

 31' 23",5, gives 18 31' 23", 75, which is nearly the same as the 

 observed angle. This agreement proves, that the angles of the 

 triangles connecting Butterton and Hensbarrow have been ob- 

 served correctly. 



art. xxi. Latitude and Longitude of Hensbarrow. 



The angle between Hensbarrow and Hemmerdon, (see Ob- 

 servations made at Butterton,) was i° 52' 4",5 ; therefore, as the 

 angle between the latter and the meridian = 94,° 16' 44", we get 

 92 24' 39",5, for the angle which Hensbarrow makes with the 

 same meridian. The distance from Hensbarrow to Butterton, 

 as found above, is 2 1602 feet ; this, with the angle 92 24' 39",5, 

 gives the distance of Hensbarrow from the meridian = 215871 

 feet, and from the perpendicular 9089 feet; these, converted 

 into parts of degrees, become 35' 17", 1, and i' 29", 62. There- 



