TABLE OP CONTENTS. 



PAET I.— ORIGINAL COMMUNICATIONS. 



Page 



Argyll, The Duke of. On a Posttertiary Lignite, or Peat-Bed, 



in the District of Kintyre, Argyllshire. [Abstract.] 196 



Bristow, H. W., Esq. On the Lower Lias or Lias -Con glomerate 



of a part of Glauiorganshire 199 



Brodie, Rev. P. B. On the presence of Purbeck Beds at Brill, 

 Buckinghamshire ; and on the Superior Estuarine Sands there 

 and at certain places in Oxfordshire and Wiltshire 197 



. On the Drift in a part of Warwickshire, and on the evi- 

 dence of Glacial Action which it affords 208 



Burton, F. M., Esq. On the Rhsetic Beds near Gainsborough .... 315 



Busk, G., Esq. On certain points in the Dentition of Fossil Bears, 



and on the relation of Ursus prisms to Z7. ferox. [Abstract.] . . 342 



Clarke, G., Esq. On the Geological Features of Mauritius. 



[Abridged.] 185 



Clarke, The Rev. W. B. On Marine Fossiliferous Secondary For- 

 mations in Australia 7 



Collin GwooD, Dr. C. On the Sulphur-springs of Northern For- 

 mosa 382 



Curry, J., Esq. On the Drift of the North of England. [Abstract.] 40 



Dawkins, W. B., Esq. On the Age of the Lower Brick-earths of 



the Thames Valley 91 



. On the Dentition of -RA^wocero5?ep^orM^MS (Owen). (With 



a Plate.) .' 213 



Dawson, Dr. J. W. On Fossils recently obtained from the Lauren- 

 tian Rocks of Canada, and on Objections to the Organic Nature 

 of JEozoon; with Notes by Dr. W. B. Carpenter, (With 2 

 Plates.) 2o7 



