Trigonometrical Survey. 



605 





Names of stations. 



Observed 



angles. 







Error. 



Angles corrected 

 for calculation. 





No. of 

 triangles 



Diff. 



Spheri- 

 cal 

 excess. 



Distances. 



LIV. 



Crouch Hill 



Epwell 



Brill 



/ n 

 145 23 26,25 

 27 3 10 



// 



11 



11 



O 1 H 



145 23 26 

 27 3 IO 



7 33 24 



Feet. 





Crouch H 



til from 



f Brill 

 \ Epwell 



- 



I02608 

 29668,8 





Distance from White Horse Hill to Shotover Hill 108050,2 feet. 





LV. 



Shotover Hill - 

 White Horse 

 Whiteham Hill - 



4 8 5 32,75 



16 59 53>75 



«H 54 34>75 









48 5 32,25 

 16 59 53*25 

 "4 54 34>5 



Hill 







180 1,25 

 Whiteham Hi 



11 from < 



r White 

 Shotoi 



Horse ] 

 rer Hill 



88662,2 

 34827,4 



LVI. 



Whiteham Hill - 

 Shotover Hill 

 Cumner Hill 



55 S 2 35 

 24 37 36 



99 2 9 4 8 >5 









55 52 36 

 24 37 37 

 99 z 9 47 



1 







^79 59 59-5 

 Cumner Hi 



1 from < 



' Shotov 

 . Whitel 



er Hill 



1am Hi) 



2 9 2 3i>5 

 H7'4«3 



And, because the Observatory of his Grace the Duke of Marl- 

 borough, at Blenheim, together with that at Oxford, have been 

 observed with the same care and attention as the principal stations, 

 and also because precise determinations of the situations are of 

 great importance, I shall here insert the triangles formed by their 

 intersections. 



mdccc 4 1 



