2 j o Of Petrify d Plam. Part III. 
The petrify 'd Barque of a Tree. 'Tis thin, and rowled 
up as Cinamon 5 but rather of the colour of that called 
Winter ane s. Withall, rough and knobed without. 
A Piece of Oak BARQUE cover d with a ftony Cruft. 
Given by Philip Packer Elq;. From a Stump above Ground. 
In Septaliuss Mufaum, as I take it, is mention made of 
Petrify d Wood found an hundred and forty Pertcbes un- 
Notticndat ^ er tne to P °f 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 Whet ft ones) 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 defcribed ) will make the Icaft 
Ebullition with any Acid. Which would make one fuf- 
pec~t, That they are Stones originally, fui generis 3 elfe it 
were ftrange, That fome of them lhould not lie in places 
where fuch Stones are bred, which with Acids make the 
faid Ebullition. 
The STELENTROCHITE. By fome, called STELE- 
CHIT ES : Entrochites, by mod. But, in proper fpeaking, 
diftinct from both. For it is not only of a Cylindrical 
Figure, or near it, and contained! a fofter fubftance in the 
Centre, anfwerable to a Pith : and alfo radiated as the 
Branch of any Tree cut tranfverjly. But moreover con- 
fifteth of feveral flat round Joy nts like little Wheels, evenly 
piFd, and, with the faid Rays, mutually indented, fo as 
altogether to make a Cylinder. Defcribed alfo by Gefner, 
pk! ^igur" W Boe*^ CO Ambrofinus, (d) and others. But we have 
co De Lap. two Accounts hereof given us in the Philofophical Tranf- 
r^OAidrov a ^' l0m '> ^ ar more accurate and particular, than is elfe- 
Muf. Metaii*. where extant. The former, by Mr. Lyfter 5 (e) together 
co Num. ^j tn between thirty and forty Figures of their Varieties, 
with fome other Congenerous Stones. The latter , by 
0) Num. ]yf r> j 0 j m Beaumont (f) Junior 3 who hath added the De- 
12p ' fcription of fome more Diverfities. And the manner of 
their growth. In this Mufxum are feveral Species, which I 
fhall here enumerate. 
A ROUND one, near? of an inch Diametre 5 with the 
Pith near a of a darker colour, hard and denfe. The 
feveral 
