CONTENTS. 



Page 



Ou the various Species of Ptychodus occurring in the English Chalk. (With Plate.) 



By the Editoe 161 



Notes on the Evidence of Glacial Action in Scotland. By P. Simmons, Esq., of White- 

 inch. ( With Cuts.) 163 



An Attempt to Correlate the Glacial and Post- Glacial Deposits of the British Isles 



and to determine their Order and Succession. By Professor W. King-, of Galway 168 



Speculations on Possible Physical and Cosmical Phenomena in reference to the Past 



Conditions of our Earth. By the Editor. . . . ... . 178 



On Chelonian Scutes from the Stonesfield Slate. By C. C. Blake, Esq. . . . 183 



Correspondence : — 



Holoptychius v. Glyptolepis. By James Poweie, Esq. . . . . . 184 



Bones at Macclesfield. By J. D. Saintee, Esq 185 



Upper Ludlow Fossils. By the Eev. W. S. Symonds, of Pendork . . . 187 



Human Eemains in Brick Earth at Luton, Kent. By the Eev. F. E. EiyeeS . 187 



Foreign Intelligence 188 



Proceedings of Geological Societies : — 



Manchester Geological Society . . . . . . „ . . .19 



Notes and Queries : — 



Correlation of the Grey Chalk and Upper Greensand 197 



Subterranean Trees at Purfleet , . . - . . . . . . 197 



Fulgurite near Macclesfield ........... 197 



Pilot Knob, in Missouri . . . . . . . . . . . 198 



Native Copper , . 198 



Eeviews : — 



Antiquity of Man. By S. E. Pattison, Esq 198 



Descriptions of two New Genera (Trypanostoma and Goniobasis), and of New 



Species of Unionidse and Melanidse. By Dr. Isaac Lea .... 200 

 M'Leod's Wall-Map (Geological) of England and Wales . . . . . 200 



CORRESPONDENTS. 



Communications received from Eev. T. D. Allen, North Cerny ; Count Maeschall, 

 Vienna ; M. Bouchee de Peethes, Abbeville ; James Wtatt, Esq., Bedford ; Edw. 

 Wood, Esq., Eichmond, Yorkshire ; Eev. W. S. Symonds, Pendock ; G. J. D., Lincoln. 



BOOKS RECEIVED. 



Description of a New Genus (Trypanostoma) of the Family Melanida?, and of New 

 Species of Uniones and Melanida3. By Isaac Lea, LL.D., Philadelphia. Merrihew and 

 Thompson. 1862. 



Introductory Test Book of Physical Geography. By David Page, F.E.S.E., F.G.S. 

 London and Edinburgh. W. Blackwood and Sons. 1863. 



Jahrbuch der Kaiserlich-Koniglichen Geologischen Eeichsanstalt. 1861 und 1862. 

 xii. Band. 4 Numbers : Sept., Oct., Nov., Dec, 1862. Mit 4 lithographirten Tafeln. 

 Wien, 31 Dec. 1862. 



Dublin Quarterly Journal of Science. Edited by Eev. S. Haughton, M.D., F.E.S. 

 No. X., April 1863. London : Williams and Norgate. 



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