jgo Gen. Roy’s Account of 
N° of 
triangles. 
Names of the 
llations. 
Obferved 
angles. 
Spheri- 
cal 
excefs. 
1 
DifF. or 
error. 
Angles cor- 
rected for 
calculation. 
Diftances. 
Feet. 
168821.07 
245777-5 
XXXIII. I 
l 
Dover Caflle . 
Fairlight Down 
Montlambert • 
1 
O / // 
• § • • 
9 © • • 
• • • • 
// 
// 
0 / // 
87 30 29.58 
43 >9 S 8 -52 
49 9 3 r -9 
• • • • 
• • • • 
7*4 
, r f Dover Cafile . 
. Montlambert from j Fairiight Down 
1 
XXXIV. ' 
Fairlight Down 
Dover Caftle . 
Blancnez 
■ 
Bis 
• • ® • 
999* 
® ® * 
25 33 55-°2 
1 10 55 29.83 
43 3 ° 35 -iS 
® • • « 
• • • • 
252469.9 
116655.93 
* 4 ^ 
CO 
1 
r f Fairlight Down 
.ncnez from [ Dpyef Caftle _ 
xxxv. i 
Dover C a file 
Montlambert 
Blancnez 
23 25 0.25 
• • t • 
• • • • 
23 2 5 °- 2 5 
36 53 18.11 
II9 41 41,64 
• * * • 
77235.0 
1.84 
Blancnez from Montlambert 
In this laft triangle, the angle at Blancnez, as determined 
with great care from a mean of many obfervations, by the 
French Academicians, was found to be 1 19° 41' 28T9, that 
is to fay, 12". 7 lefs than what refults from our obfervations 
acrofs the Channel. This difference, which is the maximum 
of the error between us in the joint operation, being fmall, 
and of no real importance one way or other, with regard t& 
the main point in difcuffion, fince it only varies the dvftance 
between Blancnez and Montlambert two or three feet, and 
the longeft fides of the triangles, which conned the two> 
Coafts, by eight or nine; it has therefore been judged bed not 
to 
