r2 anp THEORY or tut EARTH. 
Let me add another queftion or two, not relating indeed 
tomagnetifm, but, however, to the theory of the earth. 
Is not the finding of great quantities of fhells and bones 
of animals, (natural to hot climates) in the cold ones of 
our prefent world, fome proof that its poles have been 
changed? Js not the fuppofition that the poles have been 
changed, the eafieft way of accounting for the deluge, by 
getting rid of the old difficulty how to difpofe of its waters 
after it was over? Since if the poles were again to be 
changed, and placed in the prefent equator, the fea would 
fall there about 15 miles in height, and rife as much in 
the prefent polar regions; and the effect would be pro- 
portionable if the new poles were placed any where be- 
tween the prefent and the equator. ! 
Does not the apparent wrack of thefurface of this globe, 
thrown up into long ridges of mountains, with ‘ftrata ‘in 
various pofitions, make it probable, that its internal mats 
isa fluid; but a fluid fo denfeas to float the heavieft of our 
fubftances? Do we know the limit of condenfation air is 
capable of ? Suppofing it to grow denfer within the furface, 
in the fame proportion nearly as we find it does wzthour, 
at what depth may it be equal in denfity with gold? 
Can we eafily conceive: how the ftrata of the earth could 
have been fo deranged, if it hadnot been a mere fhell fup- 
ported by a heavier fluid? Would not fuch a fuppofed in- 
ternal fluid globe be immediately fenfible of a change in 
the fituation of the eatth’s axis, alter its form, and there- 
by burft the fhell, andthrow up parts of it above the reft? 
As if we would alter the pofition of the fluid contained in 
the fhell of an egg, and place its longeft diameter where 
the fhorteft now is, the fhell muft break; but would be 
much harder to break if the whole internal fubflance were 
as folid and hard as the fhell. 
Might not a wave by any means raifed in this fuppofed 
internal ocean of extremely denfe fluid, raife in fome de- 
gree 
