part 2] INFEKTCCR OOLTTE OF THE CREWKEENE DTSTKICT. 169 



From the occurrence of the Thecidell.se and specimens of Spiri- 

 ferina oolitica Moore, Mr. Upton is inclined to regard the deposit 

 as being of truellei hemera : that is, of the date of the Upper 

 Coral-Bed of Dundry Hill (near Bristol). Midford (near Bath), 

 and the Cotteswolds. I have regarded it as schloenbaclii. because 

 of the apparent absence of corals (Isastraa), the occurrence of 

 Tremadictyon sparsum Hinde, its similarity to the Sponge-Beds — 

 definitely of selrfoenbachi hemera — of Shipton Gorge and Burton 

 Bradstock ; and because of its stratigraphical relations to beds 

 above and below. 



Barrows-Hill Quarry, East Chinnock, near Hasel- 

 bury. 1 — In this quarry (32) is seen — in ascending order — the 

 top-portion of the equivalent to the ' Perrott Stone ' ; yellow and 

 grey sandy clay (10 inches) similar to that of Bed 3 at the Manor- 

 House Quarry, North Perrott ; and sandy clays, with subordinate 

 bands of greyish- white limestone (8 feet seen), which contain in 

 abundance specimens of Aulacothyris blalcei (Walker), Mliynclio- 

 nella cynocephala auctt., Terebratula tohaddonensis S. Buckman, 

 and Terebratula sp. 



Chiselbo rough Hill. — The ' Boadstone,' which is worked in 

 a quarry (S3) 2 on this hill, is very similar to the Perrott Stone 

 and comparable with the ' Biddings ' of Ham Hill. It is most 

 likely of moorei date. 



Ham Hill. — At Ham Hill (see p. 145 of this paper) the 

 portion of the Yeovil Sands of dumortieriae date consists of yellow 

 micaceous sands, with irregular bands of sand-rock and sand-burrs, 

 about 90 feet thick. They are excellently exposed in a deeply- 

 sunken lane (36) south-west of Montacute. The portion of moorei 

 date is exposed in the big quarry on the hill (35) and the main 

 mass of it is a 'freestone' — the celebrated Ham-Hill Building:- 

 Stone. 



In the big quarry the sequence is as follows : 3 



TJiirhness in 

 feet. 



1. Sand: seen about 10 



2. 'Biddings' 30 



q XT xj-ii o+ F ' Yellow Beds ' 33 



3. Ham-Hill Stone < , r, -c , - 



[ ' Grey Beds 15 



4. ' Bottom- Bed ' — hard sandstone 1 £ 



1 This is the 'near Haselbury ' of Mr. Buckman's paper of 1882 (Proc. 

 Dorset Nat. Hist. & Ant. F. C. vol. iv ; pp. 16, 33, & 43) ; ' Middle Chinnock ' 

 of his paper of 1895 (Q. J. G. S. vol. li. p. 453) ; and 'Little Silver' of his 

 1910 paper (Q. J. G. S. vol. lxvi, p. 101). 



- ' The Jurassic Rocks of Britain, vol. iv -The Lower Oolitic Rocks of 

 England (Yurkshire excepted) ' Mem. Geol. Surv. 1894. p. 71. 



3 S. S. Buckman, Q. J. G. S. vol. xlv (1889) p. 449. 



