L. Richardson—Great Oolite, Oxfordshire. 587 
may be seen at the present day at Swanscombe, in the tramway 
cuttings of the Associated Portland Cement Company, where foundered 
London Clay and its capping of gravel (different from that on 
Shooters Hill) trail down from Swanscombe Hill (300 feet O.D.) 
to about the 100 feet contour-line; the chief difference between the 
case of Bostall Common and that of Swanscombe being that at the 
latter locality the source of supply has not been cut off by a later 
stream, and that at the former the London Clay appears to be in 
situ and the drift only to have trailed. 
I1t.—Tue Grear Ooritre Secrron at Groves’ Quarry, MILTon-UNDER- 
Wycuwoop, OxForRDSHIRE. 
By L. Ricwarpson, F.R.S.E., F.G.S. 
N the occasion of a recent visit to the quarry in the Great Oolite 
at Milton-under-Wychwood, which has become known amongst 
geologists as ‘‘Groves’ Quarry, Milton”, Mr. EK. T. Paris, F.C.S., 
and I were disappointed to find that no quarrying operations were in 
progress and that apparently they had ceased for good. 
Messrs. Groves Brothers worked the quarry from 1846 onwards for 
about fifty years; but then it was acquired by a firm who afterwards 
traded as ‘‘The Taynton and Guiting Quarries, Limited”. The 
Great Oolite limestone that was worked here obtained considerable 
repute in building circles and was of two kinds. One was derived 
from the whitish beds that weather into great block-lke masses; and 
the other, from the yellower beds at the base. In the trade, both 
kinds were known as ‘ Taynton Stone’; but the first was described as 
‘No. 1’, and said to be ‘‘a fine-grained, cream-coloured oolite”’; 
while the second was denominated ‘No. 2’ and was stated to be 
a “similar stone, but a shade warmer’’. 
As the faces of the workings are in danger of becoming partially 
hidden, and the lower beds certainly will become more and more 
obscured as additional talus accumulates, and as the last working to 
be abandoned affords the most continuous view of the component beds 
of the Great Oolite that there is for many miles round, it appeared 
desirable to record and publish a detailed account. In obtaining 
these details I have had the valued assistance of Mr. E. T. Paris, who 
has named the echinoids mentioned in the section below. 
The precise position of the quarry, for which it will be probably 
best to retain the name of ‘‘ Groves’ Quarry’’, is two miles south-west 
of Shipton-under- Wychwood Church. There is a station at Shipton 
on the Great Western Railway line between Kingham and Oxford. 
Although, following precedent, I have therefore called the quarry 
‘Groves’ Quarry’’, there are actually four workings at the four 
corners of a somewhat quadrate area, the central portion of which is 
oceupied with vast spoil-heaps. 
The south-western working was the last to be abandoned, and it 
was in this that the details noted below were mostly obtained. 
