122 ME. W. -WICKHAM KING ON THE PEEMIAN [Feb. 1 899, 



near the Clent Hills, which proved that the Coal Measures rest 

 directly upon the Silurian passage-beds and that at the Lickey 

 the Carboniferous beds rest upon the Woolhope. 



(10) Carbonifekous Limestones. — Pebbles of dolomitic Carboni- 

 ferous Limestone occur generally in the Permian calcareous conglo- 

 merates of both regions. Many are silicified, and some are more or 

 less cherty. They are firm, close-grained and compact, and of 

 various colours — black, white, yellow, and dark greenish-grey. It 

 is extremely difficult to fi.nd any identifiable fossils in these pebbles, 

 but they are full of crinoid-stems. I can, however, state that they 

 contain (among others) JStreptorhynchus crenistria, Ohonetes har- 

 drensis, Productus DesTiayesianus^ Pr. costatus, Atliyris gregaria, 

 A. planosuJcata, A. Eoyssii, and Codonaster trilobatus. 



These pebbles of Carboniferous Limestone are rarest in the 

 Bowhills and Warshill districts. They commonly occur in Band B^ 

 of the Enville district, but are rarer in Band C^ of that district. 

 In the Stour Valley and Warley-Barr districts they are more 

 abundant than elsewhere, constituting at least 60 per cent, of the 

 pebbles in the Permian conglomerates. The corustones of the 

 Clent Hills district contain only a small proportion of Carboniferous 

 Limestone-pebbles. 



The discussion of the probable source of the Carboniferous Lime- 

 stone-pebbles will be deferred, until all the rocks found in these 

 Permian conglomerates have been mentioned. 



(11) Caeboniferofs Sandstones. — Yellow sandstones occur in 

 place in various parts of the Wyre Porest (as, for example, 

 Bewdley and Tenbury railway-cutting) and South Staffordshire (as 

 near Chawnhill). Fragments of them are found more or less in 

 the Permian conglomerates in both regions, especially in Band A^ 

 of the Bowhills district, and in the conglomerates at Warshill and 

 in the Stour Yalley and Warley-Barr districts. 



Green micaceous sandstones occur in place, near Bewdley, in the 

 Wyre Porest coalfield, and I have found pebbles of a similar green 

 micaceous sandstone in the conglomerates of the Bowhills district, 

 4 miles to the north-west. These Carboniferous sandstones are, 

 however, comparatively rare. 



I also found, in the Warshill Permian conglomerate, a pebble 

 derived from an older, very compact conglomerate. The component 

 materials are chiefly white (Silurian ?) limestone. The compact 

 Carboniferous conglomerates of the Wyre Forest coalfield also 

 contain fragments of limestone. 



(12) Lower Permian Sandstones. — Bed coarse sandstones, which 

 can be distinguished from the Old Bed Sandstones by their peculiar 

 tint (for they sometimes contain a certain amount of yellowish- 

 white material), and by their softer and looser texture, occur in 

 place within 1^ mile of the Bowhills district at Alvcley, and in the 

 South Staffordshire region near Hunnington. Pebbles of red 

 sandstones, comparable with these, occur generally in the Middle 



