CONTENTS. 



Page 



On Spiral Planetary Orbits and the Physical Effects of Retardation of the Earth. 



By the Editor • -81 



On the Eoraminifera of the London Clay. By Professor T. Rupert Jones, F.G.S., 



and W. K. Paeeek, Esq 85 



Cuttings from a Note-Book on Chalk Gasteropods. By Haeey Seeley, F.G-.S. . 89 



On the Denudation of Arthur's Seat, By James Haswell, M.A 93 



A List of Typical and other Figured Specimens of Fossil Vertebrata in the British 



Museum . . . • • • .99 



Correspondence : — 



Ancient Climates. By Henry C. Ckiswick 103 



Proceedings of Geological Societies : — 



Royal Institution . . . . . . . . . . . .105 



Notes and Queries : — 



Geology of Sharpness By John Jones, Esq 113 



Restoration of Pteraspis. By Hugh Mitchell 117 



Flint Implements. By Geo. J. Strong . 118 



Phosphorus in Nature .119 



Traditions of the Deluge and of the LTnity of Origin of Man. By S. J. Mackie 119 



Miscellaneous Notices . . . . . . . . . . . 120 



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