^lia) 
The fix laft figures do i>oth <hew, h6w ffdrn 
the preienr face oi Etruria we may collefl: the 
fix difiin^ faces of the fame Country,above dif« 
xourfed of, ard ferye alfo for the moie eafy unt- 
derftanding of the particulars,we have deliver’d 
concerning the Beds of the Earth. The pricked 
lines reprefent the Sandy beds of the Earth, fo 
nominated from their main matter, there being 
mix’t with them divers both Clayie and (fony 
beds. The other lines reprefent the Stony beds, 
likewife fo called a potiori,feeing there are Beds 
found in them that are of a loftcr fubftance. In 
the Dijfertation it felf I have explain’d the Let¬ 
ters of the figures,in that order wherein the fi¬ 
gures follow one another; Here I lhall only 
reckon up in (hort the order of the change. 
The zph figure exhibits the perpendicular 
Plane of Etruria^ at the time when the Stony 
Beds were yet entirc,& parallel to the horizon. 
The z^th flicws the valf cavities,eaten out by 
the force of Fire and Water, without any breach 
in the upper Beds. 
The 2jr/; reprefentSjhow Mountains & Val* 
ly’s came to be made by the ruine of the fuperior 
Bed^.j .... 
The that by the Sea new Beds were 
made in the faid Valleys. 
The iifl), that of the new Beds the lower 
ones were confumed, the uppermoft remaining 
untouch’t. 
The 2 Of that by the breach of the fuperior 
fandy Beds there were produced Hillocks and- 
Yallys. 
Tim 
