608 Zoological Proceedings of Societies. 



in Sutherland, Ross, and the Hebrides ; by Roderick Impey 

 Murchison, Esq., Sec. G.S., F.R.S., &c. 



A letter was read from G. W. Featherstonhaugh, Esq., to W. 

 H. Fitton, M.D., P.G.S., 8fc. ; containing an account of an ex- 

 cavation in the chalk at Norwich. 



Dec. 7. — A paper was read, On the Geology of Quebec and 

 its Vicinity, by J. T. Bigsby, M.D., &c. &c. 



The authour describes the district in the neighbourhood of 

 Quebec, and the rivers that traverse it. He notices the exist- 

 ence of occasional deposits of clay, gravel, and sand, including 

 organic remains, which he supposes to be of diluvial origin ; and 

 then passes to the description of the rocks, commencing with a 

 slaty series, alternating Avith calcareous conglomerate in beds, 

 some of which are charged with fossils. On the south side of 

 the river St. Lawrence, the slaty limestone of Quebec is no 

 longer seen ; but several new beds of conglomerate present 

 themselves, one of the lowest of which contains Trilobites, En- 

 crinites, Corallines, and other fossils, associated with vegetable 

 impressions, probably of Fuci and Amansia. In the horizontal 

 conchiferous limestone, the organic remains consist of several 

 species of Trilobite, Orthocera, Terebratula, Encrinite, Ammo^ 

 nite, &c. Similar organic remains are found at Beaufort quarries, 

 in ledges of fetid limestone alternating with calcareo-bituminous 

 shale. 



Dec. 21. — The reading was begun of a paper. On a Group of 

 Slate-Rocks in Yorkshire, between the Rivers Lune and Wharfe, 

 from near Kirby Lonsdale to near Malham ; by John Phillips, 

 Esq. 



Jan. 4, 1828. — The reading of Mr. Phillips's paper, begun at 

 the last meeting, was concluded. 



To this paper, a sketch is premised of the slate-series of the 

 Lakes of Westmoreland and Cumberland ; where the rocks are 

 grouped in three principal divisions, the lowest consisting of 

 dark soft slate much contorted, with fine-grained gneiss beneath 

 it passing into granite. The second division occupies a country 

 of very different aspect from that of the slate : the mountain- 

 ranges being marked by abrupt precipices, as at Helvellyn, 



