PLATE 11, 12, 13, 13*, 14*. 
I have never met ■with this species but in fragments, very 
much compressed ; generally, indeed, only impressions of 
it, on the shale or gritstone. Its prototype probably a 
Pinus. 
The fragment represented is in gritstone — When first got- 
ten, the undulated lines, which lattice the impression, were 
covered by a soft, black film of bituminous matter, frequent 
on vegetable petrifactions : this, contrasted with the lighter 
colour of the grit, gave the stone a singular and beautiful 
appearance. In a few days the film gradually hardened 
by exposure to the air, became brittle, and at length crumb- 
led away, leaving the parts it had covered in the same state 
as the rest of the specimen. The drawing shows the fossil 
as it appeared when recently procured from the quarry. 
It is to be observed, that the strias do not cross each other 
in this specimen ; they nearly touch at the wave, and then 
again recede : in many other specimens I have collected, 
they join and present a perfectly reticulated or net-like 
appearance. 
FIG. 4 , 5 . 
PHYTOLITHUS Plantites (inibricatus) trunco 
tereti squamoso : squamis rhomboideis subcarinatis 
imbiicatis, foliis confertis subulatis. S. p. 
A fossil vegetable — The original a Plant. Trunk round 
and tapering; not branched in any specimen I have yet 
