CONTENTS. 



Page 



Work for the Field-Clubs. By the Editor 41 



On Helix, and Perforated Limestone. By Miss E. Hodgson 42 



A Help to the Identification of Eossil Bivalve Shells. By Harry Seeley, F.Gr.S. . 44 



Eossil Birds. By the Editor. {Continued from p. 24) 50 



Mytilus spathulatus, a New Cretaceous Species. By H. Seeley, E.Gr.S. . . 53 

 Correspondence : — 



Spiral Planetary Orbit. By O. Eisher .53 



Mammalian and Cave Kelics. By Gilbert N. Smith 55 



Sandstone Hammer in a Diluvial Deposit at Macclesfield. By J. D. Sainter . 56 



Proceedings of Geological Societies : — 



East Kent Natural History Society . . 57 



Geological Society 62 



Royal School of Mines . . 65 



Manchester Geological Society 71 



Colonial Geology : — 



Age of New South Wales Coal-Beds. By Mr. Daintree . . . .72 

 Notes and Queries : — 



Devonians in North-East Erance. By S. E. Pattison 79 



Boulder Drift at Marlborough 80 



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