Extracts from the Minute Book of the Geological Society. 621 
generally or so plentifully, each of the remaining genera appearing 
to occupy a separate stratum ; so that, even with regard to shells, 
I have not found the univalves and bivalves mixed together, but 
severally occupying strata peculiar to themselves. Thus it will be 
seen, that in the Dock-yard, on the western side of Mount Wise, 
at Sandy Cove, and in Catdown, bivalves retaining much of their 
shelly character prevail ; while on the south-western side of Stone- 
house-hill, at the eastern end of Mount Wise, or the eastern Hoe 
under the citadel, and at the quarry on the eastern side of Catdown, 
the shells are univalves, whose substance partakes of the nature of 
the surrounding matter. 
I now proceed to mention the particular spots where organic 
remains are to be found, beginning with the western extremity of 
the limestone, and advancing towards the eastern. 
At the distance of about 150 yards to the east of the Devil’s 
Point, on the south side, we find, in situ , a marble of a most striking 
appearance, composed of stellated madrepores, of an almost pure 
white colour, imbedded in a blood-red matrix. Stellated madre- 
pores, and the vertebral columns of encrini, are to be met with in 
that hill in greater perfection than at any other place in this neigh- 
bourhood. 
In the Dock-yard I have obtained entrochi, corallites, and bivalve 
shells, retaining much of their shelly character ; there are also many 
imperfect fragments of other animal remains, of which I am not 
able to give the names. 
On the western side of Mount Wise I have frequently met with 
bivalve shells, retaining also their shelly appearance, together with 
great quantities of madrepores, columns of the encrinus, and frag- 
ments of other animal bodies, and among these an orthoceratite. 
