194 PROF. REYNOLDS AND MR. VATJGHAN ON THE [May I904, 



15. The Kbletic Beds of the South-Wales Direct Line. By Prof. 

 Sidney Hugh Reynolds, M.A.. F.G.S., and Arthur Yaughan. 

 Esq., B.A.. B.Sc, F.G.S. (Read February 3rd, 1004.) 



[Plate XVIII— Fossils.] 



Contexts. 



Page 



I. Introduction 1 94 



II. Description of the Exposures 194 



III. Correlation with the Rhaetic of Neighbouring Areas 198 



IV. Palaontoloeical Notes 201 



-■ 



I. Introduction. 



The Rhaetic Beds of the South-Wales Direct Line have been 

 briefly described by the following geologists : — 



1. Mr. H. B. Woodward, in the 'Summary of Progress of the Geological 



Survey ' for 1898, p. 191. 



2. The Rev. H. H. Winwood, in the Report of the Excursion of the 



Geologists' Association to the new Great Western Railway-line from 

 Wootton Bassett to Filton, Proc. Geol. Assoc, vol. xvii (1901) p. 148. 



3. Mr. A. Straban describes tbe Lilliput section in tbe ' Summary of Progress 



of the Geological Survey ' for 1902, Appendix V, p. 192. 



4. Mr. A. Rendle Short describes the Stoke-Gifford section in a paper read 



before the Geological Society on December llith, 1903. and now published 

 in the same part of the Quarterly Journal as the present paper. 



II. Description of the Exposures. 



The Rhaetic Beds are finely exposed in the large cutting near 

 Stoke Gifford ; they come on above the Kcu per rocks west of the 

 Carboniferous-Limestone outcrop at Lilliput Farm, and an excellent 

 section occurs resting upon the Carboniferous Limestone, from 

 Lilliput Bridge as far east as Chipping-Sodbury railway-station. 



(a) The Stoke-Gifford Section. 



As Mr. Rendle Short informed us that he was engaged on a 

 detailed examination of the Stoke-Gifford Rbaetic. we have con- 

 fined ourselves to a general account of the section, and have only 

 included the results of our independent observations in this paper. 

 Had we omitted all reference to the Stoke-Gifford section, our 

 account of the Mesozoic strata of the South- Wales Direct Line would 

 have been rendered incomplete, which seemed to us undesirable. 



On the north side of the line, at Stoke-Gifford railway-station, 

 the following series occurs, underlying the Lower Lias described by 

 us in a former communication l : — 



1 Quart. Journ. Geol. Soc. vol. lviii (1902) p. 719. 



