vi CONTENTS. 



XII. Descr'qition of Bones of the Mammoth found in the deep Sea of the British 

 Channel and German Ocean. By Capt. J. B. Martin, Harbour-Master 

 at Ramsgate. {Cotnmunicated by Sir John Kennie, F.R.S., F.G.S.) . p. 161 



XIII. On Subsidences liroduced bij working Beds of Coal. In a Letter to C. Lyell, 



Esq., F.G.S., from John BndA\e, Esq., F.G.S p. 165 



XIV. On the London and Plastic Claij Formations of the Isle of Wight. By 



James Scott Bowerbank, Esq., F.G.S. ....... p. 169 



XV. Description of the Fossil Trees found in the Excavations for the Manchester 



and Bolton Railway. By John Hawkshaw, Esq., F.G.S. . . .p. 173 



XVI. Further Observations on the Fossil Trees found in the Excavations for the 



Manchester and Bolton Railway. By John Havikshaw, Esq., F.G.S. . p. 177 



XVII. On the Siliceous Bodies of the Chalk, Greensands and Oolites. By James 



Scott Bowerbank, iS^y., F.G.aS' p. 181 



XVIII. Notes on a small Patch of Silurian Rocks to the West of Abergele, on the 

 Northern Coast of Denbighshire, visited \Sth and \9th July 1837. By 

 John Eddowes Bowman, Esq., F.L.S. {Communicated by R. I. Murchi- 



son, Esq., V.P.G.S.) p. 195 



XIX. A Description of some of the Soft Parts with the Integument, of the Hind- 

 fin of the Ichthyosaurus, indicating the Shape of the Fin when recent. 

 By Richard Owen, Esq., F.R.S., F.G.S. p. 199 



XX. Description of the Fossil Remains of a Mammal (Hyracotherium leporinum) 

 and a Bird (Lithornis vulturinus), from the London Clay. By Richard 



Owen, Esq., F.R.S., F.G.S p. 203 



XXI. Description of some Ophidiolites (Palaeophis toliapicus)yrom the London Clay 

 at Sheppey, indicative of an extinct species of Serpent. By Richard 



Owen, Esq., F.R.S., F.G.S. p. 209 



XXII. Observations on the Locality of the Hyracotherium, By William Richard- 

 son, £*§'., i^.'G.»S'. . . . . . . . . . . p. 211 



XXIII. On the Great Fault, called the Horse, in the Forest of Dean Coal-field. By 



John Buddie, Esq., F.G.S. p. 215 



A List of Donations to the Library, to the Collection of Maps, Plans, Sec- 

 tions and Models ; and to the Museums. 

 Explanation of the Plates. 



