( H 8 ) 
“ M «*» with the other two Powers; but by a Theorem- 
“ which is demonftrated by feveral of the Writers of 
“ Mechanics, but R-.nieuhriv byMonf. Huy mis in h is 
“ [‘"all freattfe .He Potent iis per F,lu trahentibusi 
a be puli d by three different Powers which 
“ are 111 &quil}brio ;with one another, according to 
“ three different. Directions, A B, B L and B O, Thefe 
“ three Powers will be as the three Sides of the Tri 
tc angle A B N, viz. as A B, A N and B N refpedi vel v 
u or as A B, B C and A C- BN being very near pa- 
“ rallel, and confequeritly equal to A C, fince they do 
not meet but at a great Diftance.. From hence it fol- 
lows, that the Foiceof Gravity is to the Centrifugal 
“ Force, as A C to BC. But a Method has been aL 
et ready fhown, how the Proportion of the Force of 
Gravity to the Centrifugal Force may be determined, 
“ and therefore the Proportion of A C to BC may be 
<c bealfo determined, which at the Latitude of 5-1 0 46' 
is as 446 to 1. Therefore in the Triangle ABC, the 
“ Proportion of A C to B C is known, and the Angle 
“ A CB being equal to the Angle CO CL, which is fub- 
<c tended by the Arch C CL, the Latitude of the Place, 
“ from thence by the Tables of Sines and Tangents’ 
the Angle B AC may be known, which in theabove- 
“ mentioned Latitude is about 5* Minutes. 
“ From hence alfo it will appear,, that it is not the 
“ Line A C, which being produced paffes through the- 
<£ Center, but the Line A B that is perpendicular s the 
“ Curve PQ., for all the Particles of the Fluid will fettle 
<c themfelves in fuch a Pofition, that their Lines of Di- 
tc redion downwards, mud be perpendicular to the Sur- 
<c face of the Body which they eompofe, for otherwife the 
Parts of the F luid wou’d not be in /Equilibrium one 
<£ with another, and therefore altho’ the Lines of DB 
44 redion of heavy Bodies do not pafs through the 
“ Center 
