fpS) 
med, the Planes F,G, had the fame fclte] • 
they obtain now; or, which is all one, 
before the Beds of the Sandy Hillocks 
were form’d, there were in the fame pla¬ 
ces deep V allies. 
4. Once the Inclin’d Plane I. was in 
the fame Plane with the Horizontal 
planes F, and G, and the naked fides 
and G, were either continued farther, or 
there was exiftent another folid, prop¬ 
ping up the fame naked fides, when the 
laid Planes were form’d 5 or,which is all 
onCj where at prefcnt,Vallies are feen be¬ 
tween the plane tops of higheft Moun¬ 
tains, there was once a continued Plane, 
under which were made vaft cavities,be¬ 
fore the ruines of the fuperior Beds. 
5. When the Plane F, G, was form’d, 
the Aqueous fluid was incumbent on it; 
or, vt'hich is all one, once the plane tops 
of the higheft Mountains were cover'd 
with Waters. 
Hence it is, that we may diftinguifli 
Six diftineft cafts of the Country of E- 
truridy and that it hath been twice Fluid, 
twice Plane and Dry, and twice fcabrous 
and Craggy. Which as I make it out 
£0 be true of Etruria^ from many places 
atteii- 
