the ’Trigonometrical Operation. 
249 
N° 
Computation of th 
Triangles. 
e firft fet of 
Angles. 
‘ , \ 
fecondary triangles. 
Diilances of the flations from the 
interfered object in feet. 
r 
1. - 
iRing’s Arbour 
St. Ann’s Hill 
Stanwell Church 
0 / // 
8 5 2 57 
4 4 44 
167 2 19 
| from Stanwell „ j 
- 
10927 
23720 
a 
[Ring’s Arbour 
Hanger-hill Tower 
Harrow on the Hill 
- ) s 
28 35 34 
89 23 52 
62 0 '34 
j from Harrow on the f 
j Hill | 
42944 
2 ° 553-3 
3 * * 
V, 
[King’s Arbour 
Hanger-hill Tower 
Ban/lead Church 
70 i 47 
82 19 25.1 
27 38 47.9 
| from Banhead Church | 
80994 
76807.5 
r 
4. < 
V 
jHampton Poor-houfe 
iKing’s Arbour 
j Kew Pagoda 
1 
88 58 23 
40 14 25 
50 47 12 
j from Kew Pagoda . j 
22849 • 
35364-5 
s; { 
Harrow on the Hill 
St. Paul’s Church 
Spring Grove Houfe, Sir Jo. 
Banks 
69.43 8 
35 5 8 9 
74.18 43 
1 from Spring Grove f 
J Houfe j 
3585! 
57253-9 
Hanger hill Tower , 
Spring Grove Hc?ufe % 
'Richmond Royal Ohfervatcry 
l 9 33 4-3 
82 46 15.9 
] 
77 40 39.8 
f frorn^ Richmond Royal J 
1 Gbfervatory 
Hangey Hill from Spring 
Grove . 
20164.4 
6802.1 
: 9 8 57 8 
f The Royal Gbfervatory in Richmond lower Park could not be .'Teen from any 
of the ftatipns of the great feries of triangles, except Hanger-hill Tower, from 
whence the bearing of it was taken. In order to interfedt this bearing, the afif- 
tance of certain operations made with the agronomical quadrant in 1783 at 
Spring Grove Houfe has been called in, by the help of which the iituations of the 
Gbfervatory and of Spring Grove Houfe have been determined. In like manner, 
the bearings of Batterfea and Stretham, taken from Hundred Acres, have been 
interfedled with the quadrant from St. Paul’s and Fulham, The flations where the 
quadrant was ufed are diftinguifhed with aherilks, 
K k * N oi - 
Vol, LXXX. 
