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CONTENTS.
| XVII. | On some new Varieties of Fossil Alcyonia. By Thomas Webster, Esq. Member of the Geological Society. | p. 377 |
| XVIII. | Miscellaneous Remarks accompanying a Catalogue of Specimens transmitted to the Geological Society. By J. Mac Culloch, M.D. F.R.S. Chemist to the Ordnance, and Lecturer on Chemistry at the Royal Military Academy at Woolwich, and Vice-President of the Geological Society. | p. 388 |
| XIX. | Remarks on several parts of Scotland which exhibit Quartz Rock, and on the Nature and Connexion of this Rock in general. By J. Mac Culloch, M.D. F.L.S. Chemist to the Ordnance, and Lecturer on Chemistry at the Royal Military Academy at Woolwich, and Vice-President of the Geological Society. | p. 450 |
| XX. | Notice relative to the Geology of the Coast of Labrador. By the Rev. Mr. Steinhauer. | p. 488 |
| XXI. | Memoranda relative to Clovely, North Devon, By the Rev. J. J. Conybeare, Member of the Geological Society. In a Letter addressed to G. B. Greenough Esq. Vice-President of the Geological Society. | p. 495 |
| XXII. | On Staffa. By J. Mac Culloch, M.D. F.L.S. Chemist to the Ordnance, and Lecturer on Chemistry at the Royal Military Academy at Woolwich, and Vice-President of the Geological Society. | p. 501 |
| XXIII. | On Vegetable Remains preserved in Chalcedony. By. J. Mac Culloch, M.D. F.L.S. Chemist to the Ordnance, and Lecturer on Chemistry at the Royal Military Academy at Woolwich, and Vice-President of the Geological Society. | p. 510 |
| XXIV. | On the Vitreous Tubes found near to Drigg, in Cumberland. | p. 528 |
| List of Donations. | p. 533 | |
| Index. | p. 547 | |
