TRIASSIC STRATA OF LANCASHIRE. 127 



which is so general in Germany^ and there forms such an 

 imposing bed, might perhaps be most easily traced in the 

 neighbourhood of Kidderminster. It is at least indicated 

 by the presence, in a reddish sandstone, of Walchia pini- 

 formis, Schl., which I saw in the collection of Mr. G. E. 

 Roberts, together with some less distinct fossils. The ex- 

 haustive collection of specimens from the upper portion of 

 the Coal-Measures of Wribbenhall, near Bewdley, made by 

 Mr. Edwin Baugh, will no doubt greatly contribute to the 

 more exact determination of the palseontographical rela- 

 tions between the Coal-Measures and the Dyas in this 

 district.^' 



In my former communications I have noticed at some 

 length, in my description of the upper Coal-Measures of 

 Canobie and the Whitehaven sandstone, these beds, ana 

 compared them with a similar sandstone found in the same 

 position at Astley,near Manchester, and Moir9.,near Ashby- 

 de-la-Zouch. Mr, H. H. Howell, F.G.S., in his excellent 

 paper on the Geology of the Warwickshire Coal-Field"^, 

 describes at length the Spirorbis-limestone with great 

 care, and shows its value as a datum-line in the upper 

 coal-field. When my last paper was printed, I had not 

 seen Mr. HowelFs communication, or I should have noticed 

 it. He had previously named this limestone Spirorbis, 

 and I, not knowing the circumstance, had done the same. 

 Of course the name belongs to him, and not to me. This 

 much, however, I will say, that I have never read a more 

 carefuUy prepared and useful description of upper coal- 

 measures than is contained in his memoir. It remains for 

 other geologists to give us similar descriptions of the higher 

 division of the western coal-fields, and then we are likely 

 to know where the Carboniferous strata end, and the Per- 

 mian begin, which is probably not so clear at present as is 

 to be desired. 



* Memoirs of the Geological Surrey of Great Britain. 



