CONTENTS. 



PART I. 



I. On the Geology of the Western Part of Asia Minor. By William John 



Hamilton, Esq., Sec. G.S., and Hugh Edwin Strickland, Esq., F.G.S. p. 1 



II. Descriptiott of some Fossil Remains o/" Chaeropotamus, Palaeotherium, Ano- 

 plotherium, and Dichobunes, yrom the Eocene Formation, Isle of Wight. 

 By Richard Owen, Esq., F.R.S., F.G.S. p. 41 



III. Observations on the Fossils representing the Thylacotherium Prevostii ( Va- 



lenciennes), with reference to the Doubts of its Mammalian and Marsupial 

 Nature recently promulgated ; and on the Phascolotherium Bucklandi. By 

 Richard Owen, Esq., F.R.S., F.G.S. 



Part I. — On the Thylacotherium . . . . . . . p. 47 



Part II. — On the Phascolotherium . . . . . . p. 58 



IV. A Letter from Dr. Harlan, addressed to the President, on the Discovery of 



the Remains of the Basilosaurus or Zeuglodon. . . . . . p. 67 



V. Observations on the Basilosaurus o/"Dr. Harlan {Zeuglodon cetoides, Owen). 



By Richard Owen, Esq., F.R.S., F.G.S p. 69 



VI. Description of a Tooth and Part of the Skeleton of the Glyptodon clavipes, 

 a large Quadruped of the Edentate Order, to which belongs the Tesselated 

 Bony Armour described and figured by Mr. Clift in a former Volume of 

 the Transactions of the Geological Society ; with a consideration of the 

 Question whether the M.ega.\\\er\um possessed an analogous Dermal Armour. 

 By Richard Owen, Esq., F.R.S., F.G.S. p. 81 



VII. On the Geology of the Neighbourhood of Lisbon. By Daniel Sharpe, Esq., 



F.L.S., F.G.S p. 107 



VIII. Remarks on some Fossil and Recent Shells, collected by Captain Bayfield, 



R.N., in Canada. By Charles Lyell, Esq., V.P.G.S., F.R.S. 8f F.L.S. p. 135 



IX. On the Distribution of Organic Remains in the Strata of the Yorkshire 

 Coast, from the Upper Sandstone to the Oxford Clay inclusive. By W. 

 C. Williamson, Esq p. 143 



X. On the relative Ages of the Tertiary and Post-tertiary Deposits of the Basin 

 of the Clyde. By James Smith, Esq., of Jordanhill, F.R.S.L. Sf E., 

 F.G.S p. 153 



XI. A Letter to Charles Lyell, Esq., on some Changes of Level which have taken 

 place in Denmark during the present period. By George Forchhammer, 

 Phil. Doct., For. Mem. G.S. p. 157 



