82 CASH & HICK: FLOEA OF THE LOWER COAL MEASURES. 
closely resembles the section of a leaf represented in Plate 18, 
fig. 1, of the work cited. The other is a fragment of epidermis, 
with numerous large and closely grouped stomata. The 
epidermal cells have disappeared, but the stomata are clear 
and distinct." We are happy to record that Mr. Binns has 
since discovered a very fine example of stomata, with some of 
the epidermal cells preserved. 
Fungi. 
"We have one example of the mycelium of a fungus, which 
was also found by Mr. Binns. 
OX AN ORTHOCERAS OF THE MILLSTONE GRIT. BY REV. J. 
STANLEY TUTE, B.A. 
I have met with an Orthoceras in a bed of black shale, 
immediately underlying the Cay ton-Grill Beds, in the parish 
of Bishop Thornton, near Ripon, which presents several 
points of interest, apparently new. It occurs in a very frag- 
mentary condition, associated with Posidonomya Becheri in 
abundance, some small fishes' teeth and scales, and a few 
flag-like vegetable remains. 
The lower part of the fossil is about an inch and a half in 
length, consists of a number of meniscus-shaped portions, and 
tapers to a point, which is bent slightly to one side. Above 
this, which in the fossil is solid (Fig. 1, 2, 3 a), there is a 
hollow chamber (Fig. 1, 2, 3 b), the walls of which are very 
thin, and marked externally with parallel rings from one- 
sixteenth to one-tenth of an inch apart (Fig. 3 b). The walls 
of this chamber I have never yet found in a perfect state : 
but such portions, as I have met with, appear to show that 
the chamber expanded regularly until it was about an inch, 
in width. 
