witha Conjectures fuggefiny a Mean, 82. op. 
Thus conftituted, and furnifhed with thofe, and other need- 
fül qualities, and furrounding the whole vifible choit of fyftems, 
might not the orb, by the principle of gravitation, either alone 
 orafüifted, keep thofe fyftems next to it, from being drawn to- 
wards the centre of gravity by their own, and. the mutual ac- 
tion of the interior fyftems ? And might not thofe feveral fyf- 
tems be fo placed, and the denfities of the bodies refpectively 
belonging to them, with the denfities of the furrounding orb, 
and confequently their mutual gravitating power, be fo regulat- 
ed, and.adjufted, as to keep them all at the diftance aífigned 
them ; and forever prevent their approximating, either to the 
centre of the general fyftem, or to its furrounding orb : all of- 
them together thus. conftituting | an undecaying permanent 
whole? - 
o It has been. obfeived by gigi ** that a body placed 
any where, within a hollow fphere, which is homogeneous, 
and every where of the fame thicknefs, will have no gravity, 
wherefoever it be placed’: the oppofite gravities always precifely 
deftroying each other.”* But that obfervation cannot be ap- 
pa to the hollow fphere or orb, above-defcribed : for by the- 
-fcription, it is ‘not homogeneous.—Nor need itbe of equal 
dicknif "which, however, is a circumftance of no confider- 
ation, if equal thicknefs, with’ different degrees of denfity in: 
different parts, ‘world’ anfwer the purpofe. 
-Fhe phenomena of nature, upon the füppofition of fach an 
orb, would probably be the fanie, ceteris paribus, as now take. 
place. - Whether that fuppofition be fupported by phenomena, 
and what other foundation ei is for it, will be the SUR o of. 
à füture memoir, 
E o Scc s Cyclopedia, under the E anda: 
