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“ Geology of the Thames Valley.” It was an enormous reptile, 
dragging upon the earth a length of between sixty and seventy 
feet, and of proportionate bulk. The quarry was found to 
exhibit a section identical with that at Langdon Bridge, namely, 
Oolitic rock, overlaid by a band of blue clay, and a bed of small 
oysters. The Saurian remains come out of the blue band, which, 
with the sandy beds above, may represent estuarine conditions 
very favorable to a reptile of such magnitude. 
THE SECOND FIELD MEETING 
for the season took place on Tuesday, 24th of June, at 
DURSLEY. 
The members assembled at Dursley Railway Station, on the 
arrival of the 10.55 train, and drove to Cam Longdown, up 
which hill they climbed, and Mr Wrrcuetz described the features 
of the surrounding district. They were, he said, standing on 
strata which marked the commencement of the Oolitic period, 
and on the dividing line between the Oolitic and the Liassic 
series. Below them the sand was some 200 feet thick, and 
overlaying the sand were the “ Cephalopoda” beds, so.called on 
account of the number of “ Cephalopoda” which characterised 
them. Above these beds succeeded the basement beds of the 
Inferior Oolite, the lowest of which consisted of sandy Lime- 
stone, very hard and compact, and to this bed was due the 
preservation of the ridge on which they were standing. The 
same bed extended through the Cotteswolds, and was found at 
Leckhampton hill. In the section of the quarry at the south 
end of the Down they would be able to trace the bed from the 
base upwards, showing the gradual development of the Oolitic 
structure. The absence of the remarkable bed known as the 
“Pea Grit,’ which at Leckhampton presents so striking a 
feature, was specially remarked upon. Mr Wrrcenent then 
called attention to the grand example of denudation which the 
country around exhibited. The whole of the Dursley valley 
has been excavated by denuding influences. Some Geologists 
attributed the denudation to glacial action, but the glaciers, if 
,s oe 
