362 Mr, Weaver's Geological Observations on 



Of vertebrated animals, — the small palate of a fish, found in the lower part 

 of the continuous limestone on the southern side of Burrington comb. 



Of Crustacea, — four specimens of a trilobite, from the same locality, being 

 the tuberculated species depicted by Brongniart (Plate IV. fig. 12. Histoire 

 Naturelle des Trilobites), and which was derived from the Dublin lime- 

 stone*. 



Of univalves not chambered, — a depressed species of Cirrus, a Helix, and a 

 Turbo; of bivalves, SLi\om'\tes, terebratulites, spiriferites, and productites ; of 

 echinites, the spines ; of crinoidea, portions of platycrinites, actinocrinites, 

 and rhodocrinites ; and of coralloid remains, caryophyllites, astreites, tubi- 

 porites, and a species of Turbinolia. 



§ 43. The effects of a destructive power, as shown in the abruption of 

 escarpments and the excavation of defiles and valleys in the Mendip range, are 

 also manifested by reproduction from their debris. The inclosed valley and 

 dells on the west of the meridian of Roborough, and the ravine which winds 

 up the northern face of Mendip on the east of that village, both bear evidence 

 of this fact. In the latter may be observed a considerable deposition of the 

 calcareo-magnesian conglomerate, which, ascending a considerable way up 



In Lower Silesia, impressions of fish in the limestone of the coal formation, near Kernzendorf 

 and Rupersdorf. (Von Raumer, iiber das gebirge Nieder Schlesiens, &c.) 



In the Forest of Thuringia, impressions of fish, in the coaly shale of the coal formation near 

 Goldlauter and other places ; and in the coal near Klein Schmalkalden and Mannebach. 

 (Freiesleben, Geognostischen Beytrag, «&c.) 



In Sarrebriick, impressions of fish in the clay-ironstone of the coal formation. (Von Schlot. 

 heim, Petrefactenkunde, p. 30 ; and Description of the Royal Museum of Natural History at 

 Paris, by M. Deleuze, English translation, p. 249.) 



Impressions of fish in the coal formation of the Hundsdriick are noticed also by M. Beurardio 

 the Journal des Mines, Vol. IV. p. 409. 



In North America, fossil fish in the sandstone of the coal formation of the Ohio, in the basin 

 of the Mississippi. (Cleveland's Elementary Treatise on Mineralogy and Geology, Vol. II. 

 page 511.) 



* This species of trilobite seems characteristic of the limestone and slate-clay of the carboniferous 

 series; occurring also in the carboniferous limestone of Caldy Island*, in that of Bristol 

 and Cork, as observed by Mr. Miller ; and apparently also in the carboniferous limestone of the 

 Isle of Man '', Kendal"^, and Dumfriesshire''; and in the carboniferous shale of Anglesea' and 

 Holy Island', 



» Catcot's collection in the Bristol library. "'Sowerby, Min. Conchol.Vol.IV.p.32.&pl,329. 



'■ Professor Henslow ; Geol. Trans. Vol. V. ' Mr. Greenough, Geol. Map of England and 

 = Sowerby's Min. Conchol. Vol. I. p. 129. Wales. 



" Ibid. Vol. III. p, 83, 



/^ 



