47 
Section at ‘*The Pound,’ Rodborough Hill. 
ft. in. 
1. Freestone rubble 3 ; 4 0 
2. Pea grit, the pisolites in ae tien tho whald aes aah: 
tegrated . é 3 0 
3. Concretionary pisalite, a phere fubbliy Oolite, with Abend 
pisolites sparingly distributed : ; ae AO 
4, Several beds of rough freestone, the lower bed cies on its 
surface numerous pockets and holes full of ferruginous sand . 6 0 
5. Bed of white freestone, upper surface plain with small valves of 
oysters adherent ‘ : : : ; : : 5 SGML) 
Nos. 2 and 3 contain in considerable numbers, T. plicata 
_ Rhynchonella cynocephala, variety with 3 plications, Nerina 
Oppelensis in fragments, and more rarely, Stomechinus ger- 
minans, Pseudodiadema depressum, and Acrosalenia Lycettii. 
One of the beds (No. 4) contains a stratum charged with 
Nerinza Oppelensis. 
The freestone beds continue downwards, but their thickness 
cannot be ascertained; their upturned edges can be seen 
in the road below, and the character of the rock appears to 
resemble that exposed in the Ruscombe quarries. At Selsley 
hill, nearly two miles to the west, these beds appear still 
more developed, and are quarried for freestone: their thickness 
cannot be less than thirty feet. The Pisolite above appears as 
marly limestone, with Terbratula plicata, T. simplex, Nerinea 
Oppelensis, &c. 
The next exposure is in the Buckholt quarry at the top of the 
old Frocester hill road. In the absence of the Pea Grit, the 
thickness of the lower beds cannot be measured, but there is a 
ferruginous bed running along the face of the quarry more than 
30 feet above the cephalopoda bed. The next section is the 
well-known one at Frocester hill. I believe the whole of the 
freestone in the lower quarry, where the cephalopoda bed is 
exposed, is anterior to the Pisolite. There is an old quarry of 
softer freestone higher up the hill, in which the fine section 
showing the oblique lamination of the beds is seen, and this may 
be above the line of the Pisolite, if it extended so far, but these 
_ beds are, I think, let down by a fault continued from the Combe 
