7x6 Mr. hutton’s Calculations to afcertain 
given points or extremes of the bafe; and this difference 
in altitude is found from the application of this propor- 
tion, as radius is to the tangent of the angle of elevation 
or depreffion, fo is the given bafe to the altitudinal dif- 
ference between the two given points,, exclufive of the 
height of the theodolite or other inftrument, which was 
afterwards allowed for. From the refolution of all thefe 
triangles, and taking the means of the many correfpond- 
ing refults, were obtained the following. numbers,, which 
fhew how many feet the points denoted by the letters 
Handing againft them are below the level of the point n 
or the Webern cairn. They are all referred to this point 
n at the Weller n extremity of the ridge of the hill, be- 
caufe it is the .moll elevated point in the whole furvey. 
o 1184 
p 14 57 
K 480 
R 1948 
3 V Ipao 
a 2898 
/3 290 1 
<y 2898 
A I303 
B 1313 
c 1384 
D 1445 
F I904 
G 1935 
H 2143 
w 2024 
L 2006 
* 2335 
v 2119 
T 21 14 
z 1815 
u 1613 
X 1 996 
s 1964 
a 1012 
b 823 
c 1364 
d 1539 
e 
2145 
M 
1958 
M' 
322 
f ' 
2246 
f 
2815 
k 
283s 
S ' 
172 
Thefe deprelfions, and thofe of feveral other principal 
points, were firft carefully computed by means of vari- 
ous different bafes, as fo many places from whence the 
fedtions were to commence. 
5 
Thefe 
