226 Gen. Roy’s Account, See. 
clofe of this Paper were well executed in different parts of the 
world, little would then remain to be done towards the deter- 
mination of the magnitude and figure of the earth, except 
multiplying, as much as poffible, experiments with the fame 
pendulums from the equator to very high fouthern and northern 
latitudes, that fome judgement might thereby be formed of 
the fimilarity, or otherwife, of the two polar fides of the 
fpheroid. 
WILL. ROY. 
leb. 22, 1787. 
ERRATA. 
In the Second Table fubjoined to this Paper, page 228, under the head 
“ Degrees of Longitude,” in the column of the length of each degree 
in fathoms, 1 . 24. from the bottom, (being that which anfwers to the Latitude 
of Greenwich) for 38161.69 read 38164.00; and in the next column of 
differences, 1. 25. from the bottom, for 53.13 read 50.82 ; and the next line 
below, for 16.12 read 18.43. 
In the Map of the Triangles, for Selsby read Selsey. 
la the Firfl Table, p. 227. the laft line of the laft column but one, for 38161.7 
read 38164.0. 
V 
Comparifon 
