Silurian Rocks of Westmoreland and North Lancashire. 533 



Ft. in. 



1 . Blackish lias clay 3 6 



2. Limestone, with Ostrea and Modiola mini- 



ma (the hottom bed) i . ... . 4 



3. Yellowish shale I 



4. Limestone, with remains of insects 4 



5. Marly shale and clay 5 3 



6. Yellowish limestone nodules, with occasional 



remains of Cypris 6 



7. Yellowish marly clay 6 



8. Black laminated clay 3 6 



9. Stone, with scales and bones of fish, and on 



the upper surface fucoid impressions. ... 1 



10. Black laminated clay 1 6 



11. Slaty calcareous stone, with Pectens 4 



12. Black laminated clay 9 



13. Bone-bed and white sandstone, with casts 



of Pullastra arenicola 3 



14. Black laminated clay 2 



15. Greenish angular marl 23 



16. Red marls with greenish zones 42 



98 7 



December 14, 1842. — On the Ridges, Elevated Beaches, Inland 

 Cliffs and Boulder Formations of the Canadian Lakes and Valley of 

 St. Lawrence. By Charles Lyell, Esq., V.P.G.S., F.R.S. 



January 4, 1843. — The reading of Mr.Lyell's memoir, commenced 

 on the 14th of December, was resumed. An abstract of it has 

 already been given, see p. 518, note. 



Notice on a Suite of specimens of Ornithoidicnites, or foot-prints 

 of Birds on the New Red Sandstone of Connecticut-" By Gideon 

 Algernon Mantell, LL.D., F.R.S. * 



Extract of a Letter from W. C. Redfield, Esq., on newly dis- 

 covered Ichthyolites in the New Red Sandstone of New Jersey. 

 Communicated by Charles Lyell, Esq., V.P.G.S.* 



A Letter was read from Mr. Charles Nicholson, accompanying 

 some fossil bones found imbedded in the banks of the Brisbane River 

 (New South Wales). 



Also an extract of a Letter from his Excellency George Grey, 

 Governor of Adelaide, to Mr. Lyell, accompanying a section of the 

 country between the eastern shore of St. Vincent's Gulf and Lake 

 Alexandrina (New South Wales), and noticing some fossils obtain- 

 ed from that district. 



January 18th, 1843.—" On the Silurian Rocks of the South of 

 Westmoreland and North of Lancashire." By Daniel Sharpe, Esq., 

 F.G.S. 



This communication is in continuation of a paper read by the au- 

 thor on the 2nd of February, 1842f, a second visit to the district 



* Abstracts of these papers have already been given, see p. 518, note, 

 t See Phil. Mag. S. 3. vol. xxi. p. 555. 



