VOL. XVII. (I) INFERIOR OOLITE-SOUTH COTTESWOLDS 97 



The upper Tng07iia-GTit is richly-fossiliferous, even more 

 so than in the neighbourhood of Stroud: specimens of 

 Trigonia costata (Sow.) and gastropods being particularly 

 abundant and well-preserved. The late W. H. Hudleston has 

 dealt with the gastropods in his monograph, and has given a 

 section to show the horizons whence they came/ which differs 

 in but a few unimportant points from that recorded in the 

 present paper. The same remark applies to Mr H. B. Wood- 

 ward's record.^ It will be noticed that there is no Upper 

 Coral-Bed here. 



The Upper Trigonia-Gvit rests upon a very well-planed 

 and bored surface of the underlying Freestone. The total 

 thickness of the Freestone at Horton is said to be 12 feet, and 

 on the evidence of a number of specimens of Amusimn per- 

 sonatum (Goldfuss) would appear to be correlative with the 

 bottom-portion of the Pea-Grit or the top-portion of the 

 Lower Limestone of sections around Cheltenham. There is 

 no evidence of the bed called the " Rhynchonella subringens- 

 Bed" in this quarry. 



A mile and a half further north the same succession 

 of beds as at the Horton Quarry is to be made out in the sides 

 of the cart-track near the barn on Church Hill, Hawkesbury ; 

 but it is unnecessary to record details of this somewhat 

 indifferent exposure, as the succession is so much plainer in the 

 large quarry alongside the road between Hawkesbury and its 

 hamlet of Hawkesbury Upton. 



Sequence between Hawkesbury and Hawkesbury Upton 



It is remarkable that the sections here have not attracted 

 more attention. " Holl noticed that the section was similar to 

 that at Horton, but that there was the Fullers' Earth exposed 

 above, and a greater thickness (probably 25 feet) of Freestone 

 below ;3 Mr H. B. Woodward passed over it altogether in 

 his historic survey of the Oohtes ;* and it was not until 1906 

 that it received detailed notice, when it was described by the 

 present writer."^ 



I " Gasteropoda of the Inferior Oolite," Monogr. Pala-ont. See. (1888), PP- 57;59. ^ "fhe 

 Jurassic Rocks of Britain, etc.." Mem. Geol. Sur%'., vol. .v. (1894), P; '"f ^ Qu?rt Joum. 

 Geol. Soc, vol. xix. (i86,), p. 310- 4 " The Jurassic Rocks of Britam etc., Mem. Geol. Surv., 

 vol. iv. (1894), p. io6. 5 Proc. Cotteswold Nat. F.C., vol. xv., pt. 3 (1906), pp. 192-194- 



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