the ‘Trigonometrical Operation. 1 73 
N° of 
triangles. 
Names of the ilations. 
Obferved 
angles. 
Spheri- 
cal 
excefs. 
DifF. or 
error. 
Angles cor- 
rected lor 
calculation. 
Diltances. 
f 
IV. : 
to 
Hundred Acres 
Hanger-hill Tower 
St. Ann’s Hill 
0 / // 
S 3 58 35-75 
68 24 44 
57 3,6 39 5 
// 
// ^ 
0 t // 
53 58 39.5 
68 24 44 
57 36 39-5 
• • • 
• • • • 
Feet. 
71934.2 
7921 1.22 
179 59 59- 2 5 
1.08 
- 1-83 
r Hanger-hill Tower 
Hundred Acres from | St Ann>s Hm _ 
”! 
Severndroog Caltle, 
Shooter’s Hill 
Hanger-hill Tower 
Hundred Acres 
53 3 i 
55 53 44-3 
7 ° 35 6.75 
• 
53 3 1 9-75 
55 53 44 
70 35 b.25 
• • • • 
• • • • 
84376.68 
74077.66 
l80 O 1.05 
1. 18 
- 0-13 
„ . ^ r f Hanger-hill Tower 
Severndroog Caftle from { Hundred Acres . 
"! 
'Norwood 
^Hanger-hill Tower 
Severndroog Callle 
107 53 37 
26 12 22.5 
45 54 J -5 
107 53 35-75 
26 12 23 
45 54 1-25 
9 9 9 m 
• • • • 
63673.31 
39 J 5 S-J 5 
l80 O I 
0.44 
+0.56 
- r Hanger-hill Tower 
Norwood from j Se¥e * ndr00g Caffle 
VII. i 
Norwood 
Hanger hill Tower 
Hundred Acres 
88 s 58 
29 41 20.75 
• ® ^ 
88 5 58.07 
29 41 21 
62 12 40.93 
t 
9 • • • 
35648.21 
°-53 
Norwood from Hundred 
Acres 
vm. I 
Tranfit Room, Green- 
wich Obfervatory 
Severndroog Caflle 
Norwood . 
Greenwich Obfervatoi 
III 56 50 
47 48 H 
20 14 58 
III 56 50 
47 48 13 
20 14 57 
• • • • 
• • • • 
I461O.58 
31274.4S | 
180 0 2 
0.0 1 
-j- 1 .9 
r f Severndroog 
y {l '° m {Norwood 
Callle 
• 
N° 
