6oo 



The Account of a 



No. of 

 triangles. 



Names of stations. 



Observed 

 angles. 



Diff. 



Spheri- 

 cal 

 excess. 



Error. 



Angles corrected 

 for calculation. 



Distances. 



XXXVII. 



Broadway Beacon 



Epwell 



Corley 



O 1 II 



56 32 45 



95 34 25,25 

 27 52 49,75 



// 

 —0,34 



— 1,62 



— 0,61 



// 



11 



; « 

 56 32 44,75 



95 34 24,75 

 27 52 50,5 



Feet. 





180 

 Corley from 



1,58 -1,58 



Broadway Beacon 



171568 



XXXV III. 



Brill 

 Epwell 

 Arbury Hill 



34 23 58,5 

 85 18,5 



6 ° 35 45,5 



— 0,65 



— I,IO 



—0,70 







34 23 57,5 

 85 17,5 

 60 35 57,5 







180 2,5 2,46 — 0,04 

 Arbury Hill from { fgjf 11 



83098,4 

 146530 



XXXIX. 



ArburyHill 



Epwell 



Corley 



89 57 4,5 

 54 45 '8,75 

 35 17 36,75 



— 1,14 

 —0,57 

 — 0,57 







89 57 5>5 

 54 45 l8 > 2 5 

 35 17 36,25 



lill 







180 



( 



Corley f 



2,29 



rom{£ 



— 2,29 



rbury I 

 pwell 



"7463 

 143827,8 



By the triangle Broadway Beacon, Epwell, Corley, (see the above) the distance from 

 Corley to Broadway Beacon is the only distance computed ; and this has been obtained 

 through the means of two observed angles only. When the observations were made at 

 Broadway Beacon, it was not imagined Corley could be seen ; and the contrary was not known 

 till the party arrived at the latter place. In so large a triangle, it would certainly be right to 

 observe all the angles : but I have given the angles as they now stand, because the distance 

 from Epwell to Corley comes out 14383 1 feet, which determination differs only three feet 

 from the same distance found by the last triangle. 



XL. 



Bow Brickhill 

 Arbury Hill 

 Brill 



68 22 56,75 

 43 16 55,5 

 68 20 7,75 



180 



— 1,21 

 -0,99 

 — 1,22 



3>43 -3>43 



68 22 59 



43 l6 54>5 

 68 20 6,5 



Bow Brickhill from < g •,, ™ 



1 4648 1 

 108058,9 



