206 
LOWER OOLITIC ROCKS OF ENGLAND: 
which appear to be equivalent to the strata yielding Bradford 
Clay fossils on the summit of Farley Down, &c. : 
Myacites. 
Ostea acuminata. 
Sowerbyi. 
Pecten vagans. 
Bhynchonella. 
Terebratula maxillata. 
Serpula. 
Apiocrinus Parkinson!. 
Echinobrissus. 
The basement-beds of the Great Oolite were exposed in the 
lane-cutting on the north side of Combe Down, and they consist 
of coarse oolite with clayey galls, and tiny fragments of shale ; 
and also o flaggy beds. In the section at Combe Grove pit 
(noted p. 241), the strata down to the Fuller's Earth, are recorded 
on the authority of William Smith. The " Sand and burs " were 
grouped by him with the Fuller's Earth Beds, but they would 
now be classed as representing the Stonesfield Beds, at the base 
of the Great Oolite. 
At Odd Down a quarry afforded the following section : 
Lower 
Division. 
' Bubble - - -2 
f Freestone (Best stone) - 10 
< Bastard stone (Lower 
I Bags) - . - 15 
FT. IN. 
Oto 3 
to 15 
to 20 
(FuEEarth). } Blue " Marl-bed" throwing out springs. 
The stone is very irregular and false-bedded ; there are five or six layers 
of the good stone, which in places is worked underground. 
The Blue Marl indicates the nearness of the Fuller's Earth, but it may 
represent a bed seen at Lansdown, that occupies a position above the lowest 
bed of flaggy oolite. 
Bath, Corsham, and Marslifield to Nailsworth. 
On the south-eastern side of Lansdown we find only the 
Lower Rags exposed. They comprise thin-bedded and flaggy 
oolite, much of it shelly, and some beds containing lignite. The 
stone has been quarried for building walls, for roofing-purposes, 
and for road-metal. 
The general section afforded by quarries and cuttings near the 
Hare and Hounds," and to the north-west of Charlcombe, is as 
follows : 
Great Oolite and 
Stonesfield Beds. 
Fullonian 
(Fuller's Earth). 
Flaggy and shelly oolite 
Hard brown oolite with marly patches, 
becoming compact at base. Ammo- 
FT. IN. 
12 
Clay, with nodules of pale-grey earthy 
limestone - - -20 to 30 
L Fissile brown shelly oolite - 3 to 4 
[Blue clay with Ostrea acuminata, Rhyn- 
chonella varians, &c., seen to depth of 
about 20 
The sections show the intimate connection between the Fuller's 
Earth and Great Oolite, and the incoming of the conditions 
represented by the Stonesfield Slate. From the clayey bed near 
