240 Of the SOLIDS 
ment of the attraGtion of the folid. If that attraction =F, 
then F= (0%. But for=on— fre; and the determi- 
nation of F depends, therefore, on the integration of x Q. 
Now ¢cofg= fin Q, and, therefore, x ¢= core 
eG Taner ica BAG 
—%, —P-) AGT Ngo x 
heey sv ey IRA a 
and fin B'AH = —~ = —~———; fo that fing = —— x 
AH NB? x? Nag + x" 
@ a Bp 
Nepe  ? = FE ee Fe) 
Hence, colo = 1—fing’ =1 0 os 10. iB straint ta 
Gr) FF) 
me (e+e+ x) ne as at aNGEe fx’ 
Grey CRY O= VGaN CP 
Acain, becaufe ‘a pe at cop eg pee 
NP Ext NOx (2 ++ x)? 
x Bliss ag hill x uti att) 
+e) +e) Gtx 
fi : 
HENCE mate or oO '= 
(ee a) 
+e x@t+xy C+! xGt+e? 
" x 
