Trigonometrical Survey. 



597 



No. of 

 triangles. 



Names of stations. 



Observed 

 angles 



Diff. 



Spheri- 

 cal 

 excess. 



Error. 



Angles corrected 

 for calculation. 



Distances. 



XXVI. 



Mendip - 

 Dundry - - 

 Farley Down - 



« I II 



60 36 15,5 

 69 52 22 



49 3» 23,5 



—0,40 

 -0,44 

 — °>37 



11 



n 



60 36 15 

 69 52 22 



49 3 l 23 



Feet. 





180 1 



Dundry 



from < 



1,21 



Farley 

 Mendif 



— 0,21 



Down 

 » - 



79 2 55.3 

 69196 



XXVII. 



Mendip - 

 Dundry - - 

 Lansdown 



4i 3 5 8 >5 

 83 34 18 



— 0*25 

 —0,40 







41 3 58,25 

 83 34 !7>5 

 55 21 44.25 







Lansdown 



from < 



'Mendi 

 ^Dundr 



P 



y - 



8 3573>2 

 55249,2 



XXVIII. 



Dundry - 

 Farley Down - 

 Lansdown 



13 41 56,25 

 27 5 2 7>S 



—0,09 

 —0,11 







13 41 5 6 



27 5 27,25 

 139 12 36,75 







Lansdown 



from - 



f Farley 

 [Dundr 



Down 



y 



28730,4 

 55248,7 



Wherefore, the mean distance from Dundry to Lansdown is 52248,9 feet. 



art. xiii. Calculation of the sides of certain principal Triangles, 

 carried on from the side Bagshot Heath and Highclere, towards the 

 north. Plate XXXI. 



Distance from Bagshot Heath to Highclere, 142952,6 feet. Phil. Trans. 1795. p. 496. 



XXIX. 



Bagshot Heath - 

 Highclere 

 Nuffield - 



MDCCC. 



55 32 26 

 46 10 18,25 

 78 17 18,25 



180 o 2,5 



—0,89 

 -0,83 

 — 1,20 



.94 



-0,43 



55 32 25,25 

 46 10 17,75 

 78 17 17 



Nuffield from { Bagshot Heath 

 L Highclere 



4H 



105321,2 

 120374 



