The other Observations on this _petrify'd_ substance, that a while since,
by the appointment of the _Royal Society_, I made, and presented to them an
account of, were these that follow, which had the honour done them by the
most accomplish'd Mr. _Evelin_, my highly honoured friend, to be inserted
and published among those excellent Observations wherewith his _Sylva_ is
replenish'd, and would therefore have been here omitted, had not the Figure
of them, as they appear'd through the _Microscope_ been before that
engraven.
This _Petrify'd_ substance resembled Wood, in that
First, all the parts of it seem'd not at all _dislocated_, or alter'd from
their natural Position, whil'st they were Wood, but the whole piece
retain'd the exact shape of Wood, having many of the conspicuous pores of
wood still remaining pores, and shewing a manifest difference visible
enough between the grain of the Wood and that of the bark, especially when
any side of it was cut smooth and polite; for then it appear'd to have a
very lovely grain, like that of some curious close Wood.
Next (it resembled Wood) in that all the smaller and (if I may so call
those which are onely visible with a good magnifying Glass) _Microscopical_
pores of it appear (both when the substance is cut and polish'd
_transversly_ and _parallel_ to the pores of it) perfectly like the
_Microscopical_ pores of several kinds of Wood, especially like and equal
to those of several sorts of rotten Wood which I have since observ'd,
retaining both the shape, position and magnitude of such pores.
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