VOL. XVI.(1) EXCURSION—BOURTON & BURFORD 25 
Thickness in 
Feet inches 
2. Below the clay in one place is a remarkable 
deposit of sand. At the top it gradually 
passes into the clay, but near the base it 
contains many small quartz pebbles and 
little black concretions of a limonitic material 
3. Limestone, flaggy, coarsely oolitic, but less 
oolitic near the base; Ostvea sp. not un- 
common ; about 8 oO 
4. In places the deposit is rubbly and clayey 
about this horizon ; Ol LE 
5. Limestone, oolitic, on the whole moderately 
well bedded ; Ostrea; seen 3 5 oO 
Mr W. H. Hudleston kindly named the gastropods. Concerning 
them he wrote (zz “itt.), ‘‘ There are a considerable number of species 
here, but their condition is such that even generic determinations are 
difficult. The most abundant shell is a narrow form of Pseudomelania, 
not unlike the ‘ Eulima’ /evigata, or ‘£.’ communis of Morris and 
Eyeett.” 
The echinoid-radioles are near, if not identical with, the radiole 
of an unknown species figured by Dr T. Wright in his ‘* Monograph 
on the British Fossil Echinodermata from the Oolitic Formations,” Pal. 
Soc., Pl. XVII, fig 10, from the Stonesfield Slate of Eyeford. If any- 
thing the ribs are a little more prominent in our specimens. 
Unfortunately all that can be said about the position of these beds 
is that they overlie the C/ypeus-Grit. This was demonstrated by a 
drain-excavation made from the barn at the head of the comb by the 
side of the Stow and Cheltenham Road to that on the hill-top, a 
quarter of a mile south of the section under consideration. This 
excavation showed the CZyfeus-Grit, full of Clypeus Plott, separated 
by an extremely thin marly deposit from limestones similar to the 
basement-beds in the above quarry. It may be as well to state, how- 
ever, that these beds underlie the Ostrea- and Rhynchonella-Bed of the 
Great-Oolite, which comes immediately above the Stonesfield Slate. 
This is known to be the case, because that bed is present in the 
immediate neighbourhood. It is exposed in a quarry, now abandoned, 
by the side (north) of the Stow Road, between the last quarry and 
Lower Swell. Time did not permit of an examination of this section. 
QUARRY IN THE GREAT-OOLITE BEDS, NEAR Thickness in 
LOWER SWELL Feet inches 
1. Greenish-grey, oolitic, indurated marl, with a 
thin seam of brown clay, and stone in places ; 
Rhynchonella concinna (Sow.), Volsella 
imbricata (Sow.), Trapeztum sp., Ostrea, 
seen Sone ; c : 3 6 
2a. Limestone, oolitic, somewhat flaggy, Ostrea I 2 
b. Rubbly oolite, clayey in places o 10 
c. Limestone, greyish oolitic; Ostrea I fo) 
3. Deposit almost wholly made up of the valves 
of a species of Ostrea of the O. Sowerbyt- 
type, embedded in a soft cream-coloured 
argillaceous matrix ; Rhyn, concinna (Sow.) 6 10 
4. Somewhat hard, white, argillaceous limestone, 
also full of Ostrea ; seen 
