66 



"ord Abbas, which we quote, as showing that Dr. Wright had at 

 .nis time identified the Dorset Cephalopoda bed with the one in 

 Gloucestershire : 



"'Between Yeovil and Sherborne ^ the 1 Cephalopoda bed is well 

 developed and extensively exposed; and at the Half-way House its 

 relations to the Sands below, and the Limestone of the Inferior 

 Oolite above, may be satisfactorily made out. Here it contains a 

 great many large Ammonites, Nautili, and Belemnites, as 



Ammonites dorsetensis, Wright. Belemnites breviformis, Voltz. 



jurensis, Zieten. compressus, Voltz. 



Nautilus inornatus, If Orb. 



' Section VI. At Bradford Abbas, near Yeovil, Dorsetshire. 



1 Inferior Oolite. 



ft. in. 

 ' A. Coarse, hard, brown ragstone, slightly oolitic, very irregularly 



bedded, and containing few fossils ; about 2 



B and c. Absent. 



' Cephalopoda-bed. 



1 D. A coarse, brown, oolitic ragstone, composed in part of hard, 

 calcareous, sandy layers, grey and brown, and having softer 

 marly sandy seams running through the rock ; it breaks 

 with an uncertain fracture, and sometimes has a flinty hard- 

 ness : the ragstones are speckled with dark brown flattened 

 oolitic grains of hydrate of iron, and contain many fossils : 

 about 2 6 '* 



It was then clearly Dr. Wright's view (in which he was, indeed, 

 both preceded and followed by other geologists) that the Dorset 

 Cephalopoda-bed was identical with that of Gloucestershire; and 

 indeed we have seen fossils from the Bradford bed just described 

 labelled as from Upper Lias. 



Mr. Strickland, in 1850, considered the ironshot oolite of Dundry 

 the equivalent of the Cephalopoda-bed of the Haresfield Hill. He 

 says, " A few miles to the south the Pisolite disappears and is re- 

 placed near Pains wick and at Haresford Hill by strata containing 

 ferruginous oolitic grains in a brown paste. This is the precise 

 equivalent of the well-known oolite of Dundry, near Bristol, which 

 may be recognised as far off as Bridport, on the Dorset coast."t 



Now this view was quoted by Dr. Wright in a paper published 

 in the " Quarterly Journal " for 1860, only to be dissented from ; for 



* Quart. Journ. GeoL Soc., voL xiL (1856), p. 302. t Ibid., voL vi, p. 250. 



