dationsjthe /^r^/^ being of different TextureSjCompound^v 
Simples, repeated over and over, which Stem firft moft 
accurately diftinguifti'd, Troirm, En^ifh Edit , p, 59^ 
40, 41.) The great Inequalities on the Surface, he at- 
tributes to the difruptions and changed Situations of the 
Strata , which gave Birth to the Hills and Foun» 
tains. 
Amongft the many Opinions concerning the Origine 
of Springs , our Author only examines three or foury 
tho' Monfieur Perault , in his Origine des Fontaines , 
reckons up above Twenty two ; and Dr, Tlot is very co- 
pious in his Tent am. Philofoph, The Hypothefes refuted 
by Bartholine, are ift, tho(e, which attribute the Caufe 
of Springs to the Condenlation of Vapours on the 
Mountains, or in Caverns. Secondly, They who will 
needs draw them from the Evaporations of fubterrane- 
ous Waters, either lodg'd about the Centre of the 
Earth, or nearer the Surface, as Becher and Des Cartes. 
The Third Conjedure, which our Author undertakes 
to oppofe , is that of bringing Springs from the Sea, 
by Filtration or Canals. 
Laftly, He delivers his own Opinion, which makes 
Rain-Water, ftop'd by the Strata of the Earth , 
to be fufficient for the feeding of Fountains and 
this may be Calculated from the Obfervations of 
M. Perault , and Mariotte , to which Mr. Ray adds 
many Uluftrations in his three Phyfico-Theological Dif^ 
conrfesy zd Edit, 169}, 
ERJl.AXA^ 
