494 
The Account of a 
art. hi. branch i. Consisting of the Triangles which connect the Base of 
Departure on Hounslow Heath with that of Verification on Salisbury Plain, 
being bounded by the Sides connecting the Stations, Hanger Hill, St. Ann’s 
Hill, Bagshot Heath, Highclere, Beacon Hill, and Four Mile-stone on the 
North; and on the South Side, by those connecting the Stations Dean Hill, 
Butser Hill, Hind Head, Leith Hill, and Banstead. 
Distance from King’s Arbour to Hampton Poor House, 27404,2 Feet. 
No. 
of 
triangles 
Names of stations. 
Observed 
angles. 
Diff. 
Spheri- 
cal 
excess. 
Error. 
Angles 
corrected 
for calculation. 
Distances. 
I. 
St. Ann’s Hill 
Hampton Poor House 
King’s Arbour - 
44 ^ 52.25 
61 26 34,5 
74 H 35 > Z S 
" 
" 
44 18 51.75 
61 26 33,75 
74 *4 34.5 
Feet. 
1 80 0 2 
0,21 
+ 1.79 
St. Ann’s Hill from ( “""P 1 ™ £ oor House 
\ King’s Arbour - 
37753.5 
34455 . 2 
II. 
Banstead 
King’s Arbour 
St. Ann’s Hill 
25 15 42,25 
71 46 23,25 
82 57 58,25 
25 15 41 
71 46 22 
82 57 57 - 
180 0 3,75 
0,62 
+ 3 jI 3 
■n ^ j f King’s Arbour 
Banstead | gt | nn>s HilI 
- 
80131,6* 
76687,7 
III. 
Hanger Hill - 
Hampton Poor House 
St. Ann’s Hill 
24 39 16,5 
1130 3 3> z 5 
1 25 17 40.75 
24 39 16,5 
* 3 ° 3 3 > 
25 17 40,5 
|i8o 0 0,5 
0,26 
+ 0,24 
7T,„„„ trii f Hampton Poor House 
Hanger H.U { St . A l nn ’ S Hill 
38670,0 
69278,3* 
