PLATE 11, 12, 13,. 13*, 14-. 
Cactus; but its leafy structure seems to separate it from that 
genus. Mr. Whitehurst mentions the fossil in his “ Inquiry 
into the original state and formation of the Earth, p. 203, as 
the remains of the euphorbia of the East-Indies. 
Fig. 1. The furrowed side of the trunk. 
2. A specimen with the furrowed side broken otF, in 
order to show the imbricate body which lies under the 
sulcus. 
The figure two-thirds less than the oiiglnal. 
2 *. Represents a specimen with the leaves remaining, 
in a mass of gritstone. 
The specimen four or five times larger than the figure. 
fig. 3. 
PHYTOLITHUS (cancellalus) trunci? undatim retl- 
culato-striati : in omni interslitio squama parva 
subrhombea. S. t. 
A petrified vegetable. The original a trunk or stem ; 
surface cancellated with waving lines. In the centre of 
each interstice, a small and somewhat rhombed scale. 
Common in argillaceous grit and coal-shale: frequent 
also in the coal itself, near Buxton. 
