(6p) 
That in Ore of Copper the 
Angular Bodies are formed the ftrmng of 
after the fame m 3 nner,as hath 
been faid of Chryftal and Iron^ may be 
collefted from thofe Coppsr-piecesj 
which Your Highnefs keeps amongft o- 
thtr Curiofities of Nature .* But feeing 
that the plenty of the matter f^ls up ai| 
the interftices of Bodies, 'tis hard to find 
out the whole Figure of Bodies, 
Not is it otherwife with 
the Angular Bodies of Silver, ^ wr-ocf. 
tranfmitted to Your Highnefs outoftJ^r- 
mmy. 
As to Diamonds , and t\iQ of the pkeemd 
place and manner of their 
produdion 5 we may from 
their Fabrick infer the fame, ‘ 
We did of Chryftals 5 namely, 
I. That they are produced in a Fluid 
inclpfed in the Cavities of Stones? al¬ 
though a famous Writer of the Indies 
would perfwade us, that Diamonds in a 
certain number of years do grow again 
in the Earth, whence they were once 
digg'd out. 
That they are produced in a Fluid 
by the appofition of Adamantin matter. 
F I j.Thai 
