118 
ORGANIC REMAINS. 
galerites, and cidarites, geologists will at once refer it to the strata 
which intervene between the Kimmeridge clay and the lias ; the 
abundance of amphidesma securiforme, isocardia minima, pinna cuneata, 
and ostrea Marshii, and the absence of gryplisea dilatata, ammonites 
perarmatus, and spatangus ovalis, will connect it with the Bath oolite 
formation generally, whilst a faithful comparison of its whole suite of 
organic remains, with those of the Stonesfield slate and forest marble, 
and upper and lower oolites of Bath respectively, will always be sufficient 
to discriminate these rocks, even where no aid can be derived from ob- 
servations of its geological position. The specimens which I have had 
the opportunity of consulting are insufficient to demonstrate the ex- 
istence of cornbrash in a distinct character above the coal of Brora. 
FOSSILS OF THE UPPER SANDSTONE AND SHALE. 
These consist entirely of the remains of plants, of the natural fami- 
lies, equisetaceu. 1 , lycopodinea?, Alices, cycadeag, and pal mas, (Sternberg,) 
and of fibrous and ramified wood. Only one locality, a bed of shale 
with nodular ironstone, at the island between Red cliff and Gris- 
thorpe cliff, has produced the more delicate species ; but this is rather 
owing to their more fortunate exposure in that situation, by the exten- 
sion of the shale along the shore, than to their absolute deficiency at 
other places in the same range. Traces of equisetiform and cycadiform 
plants may, with attention, be perceived at the White Nab ; a beautiful 
sphasnopteris has been found by Mr. Bean at Scalby ; and dicotyledonous 
wood, in fragments and branches, occurs generally in the sandstone rocks 
above the gray limestone, or Bath oolite. The following catalogue in- 
cludes the species which appear to me to be certainly distinct, grouped 
chiefly after Brongniart’s method, according to the arrangement and 
neuration of their leaves. I have ventured to assign names to the new 
species, subject to the correction of more experienced botanists, for whom 
I have endeavoured faithfully to copy the characteristic structure of the 
plants. (See the Synoptic Table of Organic Remains in a future page.) 
