f50) 
the height of the firft waters 5 whole 
Fields with their Trees and Houfes do 
by degrees fubfidcj or are fwallow’d un” 
awarcs, fo that there come to be vaft 
Lakes, where formerly ftood Towns 5 
that thofe who live on Plains are in dan¬ 
ger of fuch mines, if they be not fure 
of a ftony foundation under them; that 
at times there are open’d Gulfs exhaling 
a peftifcrous Air, which by ftoreof Bo¬ 
dies thrown in are again flopp’d up. 
.. , ThefamechangedSciteof 
varkgZfaols, Beds hath occafioned all 
di-theRmptacks forts of Variegated Stones^ 
0f Minerals. prepared a Receptacle 
for moft ^Minerals 5 whether that have 
happen’d in the FilTures of Beds, or in 
thofe Crevices, which were found in the 
Matter of them not yet hard, though 
dry, or between Plates, or in Sciifures: 
Or whether in the Interftices between 
the upper and lower Beds, after the 
downfall of the inferiour Beds j or laft- 
ly, whether in Void places left by the 
refolution of Bodies there contained. 
Whence, 
1. It may be demonftrated, that *tis a 
very flight, and indeed no foundation at 
all, 
