Trigonometrical Survey. 
495 
No. of 
triangles 
Names of'stations. 
Observed 
angles. 
DifF. 
Spheri- 
cal 
excess. 
Error. 
Angles corrected 
for calculation. 
Distances. 
IV. 
Banstead 
Hanger Hill 
St. Ann’s Hill 
53 22 39*75 
62 40 34,75 
63 56 46,75 
// 
-0,35 
-0,39 
-0,39 
it 
1 
II 
53 22 39,5 
62 40 34,25 
63 56 46,25 
Feet. 
18a 0 1,25 
1 1, 1 
+ °> I 5 
Banstead { st“£?Hm 
- 
775474 * 
76688,4 
By these triangles, the distances from St. Ann’s Hill to Banstead are 76687,7 feet, and 
76688,4 feet; the mean of which is 76688 feet; and with this distance the sides marked 
with asterisks have been determined by working back. 
Banstead from St. Ann’s Hill, 76688,0 feet. 
r. 
Leith Hill 
58 19 
22,5 
- 0,35 
58 
>9 
22,25 
Banstead 
77 37 
35>5 
— 0,44 
77 
37 
35 , 
St. Ann’s Hill 
44 3 
3 
-0,33 
44 
3 - 
2,75 
180 0 
1 
1, 1 
— 0,1 
Leith Hill { “ m ,f 
- 
62655,2 
88019,8 
Quadrilateral, formed by the Sides, St. Ann’s Hill and Bagshot Heath, Bag- 
shot Heath and Hind Head, Hind Head and Leith Hill, Leith Hill and 
St. Ann’s Hill. 
St. Ann’s Hill from Leith Hill 88019,8 Feet. 
VI. 
Hind Head 
St. Ann’s Hill 
Leith Hill 
51 10 39,75 
46 40 30,5 
82 851 
- 0,5 
- 0,47 
- 0,7 
51 10 
46 40 
82 8 
39.25 
30.25 
50,5 
180 0 1,25 
1,7 
_o ,45 
r t * 1 tt j f St. Ann s dill 
Hind Head ( Leith H ;„ 
- 
1119174* 
82x87,8 • 
% S 3 
