196 





U 



BuPRESTIDiE, 



I am indebted to my old friend Professor 

 Ramsay for the accompanying section, which 

 he kindly made for me some years ago. The 

 hill is capped by the Great Oolite, (7 ;) beneath 

 this is the FuUers Earth, (6,) which here is 128 

 feet thick, and overlies the Limestone of the 

 Inferior Oolite, (5,) which is 80 feet thick, resting 

 on the hard sandy bands of the Upper Lias, 

 (4,) with specks of the silicate of iron, containing 

 Ammonites and Belemnites; to these succeed 

 the soft sands of the Upper Lias, (4,) with 

 lenticular concretions, having a thickness of 

 123 feet; these rest on the Upper Lias shale, 

 (3,) and the latter on the Marlstone, (2,) which 

 has a thickness of nearly 200 feet; the middle 

 and Lower Lias shales and Limestones, (1,) 

 stretching westward towards the vale. 



Stonesfield Slate. — So weU exposed on Seven- 

 hampton Common, Eyeford, and Naunton, 

 consists of sandy flags, slates, and blue Lime- 

 stones which are often fissile and capable of 

 being split into slates for roofing, disclosing 

 in the sections Trigonia impressa, Ostrea acumi- 

 nata, and Avicula ovata, Lima cardiiformis, 

 Peden lens, P. vagans, with very beautiful 

 specimens of Btsir-&.shes, Astropecten Cotteswoldice, 

 and Astropecten Wittsii. The unique 8olaster 

 ; Moretoms was extracted by the workmen from 

 : a bed of rock in the Windrush Quany, 

 j Gloucestershire, equivalent in age with the 

 ! Stonesfield slate of the northern Cotteswolds. 

 ' Alternating with this marine fauna are certain 

 ^ shales which have been deposited in an estuary, 

 for in them we find the remains of plants, 

 the elytra of Coleoptera, and other parts of 

 insects, belonging to the families Blapsid^, 

 CocciNELiiiD^, PiMPELLiiDj;, ^nd Prjoniid^. 



