The Editor requests that coutributors will bear in mind the POPULAR 

 character of The Geologist, and endeavour to make their articles explicit 

 and intelligible to general readers. 



Students or others wishing for information on particular points of 

 Geology, or for explanation of Geological terms and phrases, are requested 

 to address their questions to the Editor of The Geologist. Answers 

 will be given to them in the ensuing number of the Magazine. 



Letters and communications by Post, specimens, books for review, and 

 parcels for this Magazine, to be addressed to The Editor of the Geologist, 

 154, Strand, London, W.C. to whom all advertisements may be addressed. 



The Editor requests subscribers to forward their names and addresses 

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The Geologist is sent by Post free to Subscribers for six months on 

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Geologist Office, S. J. MACKIE, 



154, Strand. Editor and Proprietor. 



The Editor and Froprietor of The Geologist respectfully informs 

 the Subscribers to this Magazine that the SUBSCRIPTIONS FOR 

 THE ENSUING HaLF-YEAR WILL BECOME DUE AFTER THE ISSUE 

 OF THE PRESENT NUMBER. 



NOTICE TO OUR READERS AND CORRESPONDENTS. 



From the necessity of including the two valuable articles of Mr. 

 Salmon and Dr. Watson in this Number, the Editor regrets he has been 

 obliged, for want of space, to omit the report of Proceedings of Geo- 

 logical Societies, and the Notes and Queries. Of the latter, those 

 requiring immediate attention will be replied to by Post to the commu- 

 nicators. 



CORRESPONDENTS. 



Communications received from Count Marshall, Vienna; Dr. Hornes, "Vienna; 

 J. Bainbridge, Esq. F.G.S. York; the Rev. E. G. Bonnet, M.A. Westminster; 

 Dr. Bevan, F.G.S. Beaufort, Monmouth; Mr. Edw. Tindall, Bridlington; 

 Mr. Mark Norman, Yentnor; '*A Working Geologist"; D. C. Davies, Esq. 

 Oswestry ; J. Mushen, Esq. Birmingham. 



BOOKS RECEIVED. 



" Peaks, Passes, and Glaciers," by Members of the Alpine Club. London : 

 Longman & Co. 1859. 



" On Lavas of Mount Etna formed on Steep Slopes, and on Craters of Elevation," 

 by Sir Charles Ltell, F.R.S. 



'* Eeply to the Criticisms of James D. Dana," by Jules Marcou. 



" Supplemental Note on the Priority of the Tyneside Catalogue," by Richard Howse. 



" Abstract of Proceedings of the Geological Society." 



" Abstract of Proceedings of Royal Institution." 



" Biographic et Dictionnaire des Litterateurs et des Savants Fran9ai8 Contempo- 

 rains." (Notice of Dr. Phipson.) Amiens; Caron et Lambert. 



