﻿514 ME. F. E. C. EEED AND PROF. S. H. EEYXOLDS OX [XoV. I90S, 



the northern and eastern portions ; and it is only in them that the 

 contemporaneous igneous rocks, which add a special interest to 

 the Tort worth Llandovery series, are met with. 



For purposes of description, the regions where Llandovery rocks 

 are found may be classified as follows ; — 



(a) The Cbarfield-Green Area. 



(6) The ATening-Green, Datnery, L-onmill-Wood, and Tortworth Areas. 



(c) The Daniel's-Wood Area. 



(d) The Middlemill and Woodford Areas. 



(e) The Eastwood-Park Area. 



(a) The Char field-Green Area. 



This patch of Silurian rocks, whieh has a maximum length of 

 about a mile and a width of about half a mile, is surrounded on all 

 sides by Keuper. In the Geological-Survey map it is shown as 

 consisting (apart from the two trap-bands) entirely of Llandovery 

 rocks, but the north-western part really consists of "Wenlock strata. 



In the paper already mentioned, the exposures immediately 

 associated with the trap are described. The following additional 

 exposures of Llandovery rocks may be enumerated : — 



(1) By a little pond, a short distance north-west of Pool Farm. 



(2) An old, greatlj- overgrown quarry, 150 yards east-north-east of Charfield 



Station. Inspection of Buckland & Conybeare's map shows this to 

 be probahly Long's Quarry, from which certain fossils in the Jermyn- 

 Street collection were obtained. Wearer mentions the occurrence of 

 strontium-sulphate in Long's Quarry. 



(3) In the bed of the small stream which, flowing in a north-easterly 



direction, joins the Little Avon near Ebury Hill. The lower trap- 

 band is well exposed, both in the stream and in the field to the south, 

 and overlying the trap is red micaceous sandstone. 



The above-mentioned exposures are all east of the Midland 

 Railway. West of the line, Llandovery sandstone dipping from 30° 

 to 35° west- south-westwards occurs in the bed of a little stream, 

 about midway between Yine Cottage and Hillhouse Farm ; and a 

 short distance farther north, at Fowler's-Court Farm, there is a 

 considerable exposure of Llandovery rocks dipping at 10° W. 15° S. 



At all these localities the Llandovery dips in a westerly or south- 

 westerly direction, and possesses the same lithological character 

 as in the better-exposed region in the neighbourhood of Damery. 

 The prevalent fossils are — Ccelospira hemispheirica. Atrypa reticu- 

 laris^ Chonetes striatella var., Phacops Weavari, and Eticrviuriis 

 punctatus.^ 



All the exposures as yet described are in rocks underlying 

 the upper trap-band ; but, in the previous communication already 

 mentioned, an account is given on pp. 270 & 271 of a small section 

 in Cullimore's Quarry, Charfield Green, where fossiliferous calca- 

 reous ash occurs overlying the upper trap-band. Eecent cutting- 



^ The authors of names of fossils being cited in the general table appended 

 to this paper (pp. 538-43), it has been thought unnecessary to repeat them 

 throughout the paper. 



