270 Of ^Petrifyd VlantL Part 
The petrify d Barque of a Tree. 'Tis thin, and fowled 
up as Cinanion 5 but rather of the colour of that called 
Winteranes. Withall, rough and knobed without. 
A Piece of Oak BARQUE cover d with a ftony Cruft 
Given by Philip Packer Efq$. From a Stump above Ground. 
In Septalius's Muf<zum, as I take it, is mention made of 
Petrify d Wood found an hundred and forty Pertches un- 
Nomendat ^ er t0 P °^ a Mountain. And by Kentman (a) of a 
fort of petrify 'd Beech ( as the people call it ) both Trunk, 
Branches, and Leaves , taken ( for Whetftones) out of the 
Ground in the Joachimick Vale, an hundred and feventy 
Elns depth. But what kind of Eln is here meant, is not 
certain. 
Of petrify'd Woods it may be noted, That none of 
them ( at leaft of thefe here defcnbed ) will make the leaft 
Ebullition with any Acid. Which would make one fuf- 
peel:, That they are Stones originally, fui generis 5 elfeit 
. were ftrange, That fome of them ihould not lie in places 
where fuch Stones are bred, which with Acids make the 
faid Ebullition. 
The STELENTROCHITE. By fome, called STELE- 
CHITES : Entrochites, by moil:. But, in proper fpeaking, 
diftincl: from both. For it is not only of a Cylindrical 
Figure, or near it, and containeth a fofter fubilancc in the 
Centre, anfwerable to a Pith: and alfo radiated as the 
Branch of any Tree cut tranfverfiy. But moreover con- 
fifteth of feveral flat round Joynts like little Wheels, evenly 
piPd, and, with the faid Rays, mutually indented, fo as 
altogether to make a Cylinder. Defcribed alfo by Gefner, 
pii^gm-". W ^ oetim ^ CO Ambrofinw,(d) and others. But we have 
(c) De Lap. two Accounts hereof given us in the Philofophical Tranf- 
fjPfu' affiions, far more accurate and particular, than is elfe- 
MuCMetaii. where extant. The former, by Mr. Lyfter 5 {e) together 
(e) Num. Wltn between thirty and forty Figures of their Varieties, 
with fome other Congenerous Stones. The latter , by 
(f) Num. Mr. John Beaumont (f) Junior-^ who hath added the De- 
fcription of fome more Diversities. And the manner of 
their growth. In this Mufaum are feveral Species, which I 
Here enumerate. 
A ROUND one, near? of an inch Diametre 3 with the 
Pith near a \ of a darker colour, hard and denfe. The 
feveral 
