CONTENTS. 



Page 



On the Bituminous Coal of the Arigna ' District, Counties Roscommon and Leitrim. 

 By G. V. Dtj Notes, Senior Geologist of the Irish Geological Survey. (With a 



Map, Plate, and Sections.) .......... 81 



Correspondence : — 



Crocodilian Remains in Scottish " Old Red." By James Poweie, F.G.S. . . 92 



Colouring Matter of Red Chalk. By Edwaed Tindall 93 



Mammalian and Human Remains, Isle of Portland. By Rev. J. D. Allen . 94 



Glyptolepis of Dura Den. By James Poweie, F.Gr.S 95 



Proceedings of Geological Societies : — 



Geological Society ............ 97 



Manchester Geological Society . . . . . ... . . . 100 



Society of Arts * . . . . 105 



Anthropological Society ........... 105 



Notes and Queries : — 



Artificial Cavern . . . . . . .105 



A Classified and Stratigraphical List of Fossil Birds. By the Editoe . . . 106 



Progressive Change in Form of Earth . 110 



Fish Remains from Crag . . . . . . . . . . . 113 



Mammalian Remains in Hampshire Gravel ........ 110 



Flint Implements from Norwich. (With a Woodcut.) ..... Ill 



Mammalian Remains at Dulwich . . . . . . . , . 113 



Geographical Extent of Drift .......... 113 



Bone Cave at Cefn, Flintshire . . . . . . . . .114 



Peat Sandstone ............. 114 



Copper Age of America, M. Morlot on 114 



Argyllite 115 



Reviews : — 



Land and Freshwater Mollusks of the British Isles. By L. Reeve, F.L.S. . . 119 



Year-Book of Facts. By J. Timbs 120 



Evidence as to Man's Place in Nature. By Professor Huxley, F.R.S. . . . 120 



CORRESPONDENTS. 



Communications received from Geoege V. Du Notee, Esq., Dublin ; C. Mooee, Esq., 

 Bath ; W. Pengelly, Esq., Torquay; E. R. Lankestee, Esq., London. 



BOOKS RECEIVED. 



Revue Archeologique. 



Silliman's American Journal of Science and Art. 

 Timbs's Year-Book of Facts. 



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