362 
LOWER OOLITIC ROOKS OF ENGLAND : 
Great Oolite 
Series. 
Hard grey and cream-coloured lime-: 
stone, mostly crowded with oolite 
grains, and with bits of shells : Ostrea 
acuminata ? - about 
Greenish-grey sandy rock 
Hard grey calcareous sandstone 
Limestone with Ostrea, and ? clay 
Greenish-grey sandy clay, with Ostrea 
acuminata and Crustacean claw 
Rock and clay - 
Clay with occasional hard bands of 
limestone, &c., and with oolite grains 
in some layers : Astarte and other 
fossils (not determined) : oolitic lime- 
stone at base - 
FT. IN. 
8 6 
v l 
16 
2 6 
2 
10 
- 13 
38 6 

I had the advantage of seeing the rock-specimens, and noticed 
examples of oolite and also of calcareous sandstone with 
scattered grains of oolite, that closely resemble specimens of 
Forest Marble from Tetbury. Mr. Whitaker has doubtfully 
classed the beds with the Forest Marble. I may add that rocks 
of similar lithological character occur in the Stonesfield Series at 
Througham Field near Bisley ; and having regard to the occurrence 
of Ostrea acuminata I am disposed to group the strata with the 
Lower Division of the Great Oolite. It is interesting to note 
that the beds belonging to the Great Oolite Series under London, 
approximate in character rather to the beds exposed in Wiltshire, 
than to those that outcrop on the north in Bedfordshire. 
A general section taken from Chatham to the neighbourhood of 
Faringdon, leads to the conclusion that, beneath the Cretaceous 
covering there is a denuded anticline of Jurassic rocks, for the 
Great Oolite alone has been found under London, and it is followed 
both eastwards and westwards by higher Jurassic strata.* 
The occurrence of Lower Oolites has been notified in the 
deep boring at Shakespeare Cliff, Dover : beds of Bathonian age 
being said to be penetrated, and to overlie Coal-measures at a depth 
of 1,157 feet from the surface : a shaft being sunk 44 feet and a 
boring carried 1,113 feet, before the older rocks were reached.f 
As full particulars of the evidence on which the record is based, 
have not at present been made public, and as Middle and Upper 
Oolites are also stated to occur at the locality, further remarks 
will be left for the volume dealing with those higher members of 
the Jurassic system. 
Cirencester and Tetbury. 
Attention was first drawn to the occurrence of the Bradford 
Clay near Cirencester, in 1847, by S. P. Woodward, then Pro- 
* H. B. W., Proc. Geol. Assoc., vol. xii. p. 329. 
t W. B. Dawkins, Nature, July 31, 1890, p. 320 ; Contemporary Keview, vol. Ivii. 
April 1890, p. 475 ; Trans. Manchester Geol. Soc., vol. xx. p. 502, and vol. xxi. 
p. 458. E. Lorieux, Ann. des Mines, ser. 9, vol. ii. p. 227 ; and F. Brady, Dover 
Coal Boring, June, 1892 (privately printed, see Nat. Science, vol. ii. p. 230). 
