TO GEOLOGISTS. 



Large and Small Collections, or Single Specimens of SILURIAN 

 FOSSILS, from the neighbourhood of Ludlow, for Sale; apply to 

 A. HAESTON, CAVE STEEET, LUDLOW. 



SAMUEL HIGHLEY, 



SCIENTIFIC EDUCATIONALIST, 



MICROSCOPE &. PHILOSOPHICAL INSTRUMENT MAKER, 



Invites attention to his CoUections of APPAEATUS MODELS, NATURAL 

 HISTOEY SPECIMENS, etc., now on View in Classes 13, 14, and 29, AT THE 

 INTEENATIONAL EXHIBITION. 



A Descriptive Illustrated Catalogue ( six Stamps) on application. 

 70, DEAN STEEET, SOHO SQUAEE, LONDON, W. 

 Just Published ^ 



BRITISH CONCHOLOGY; or. An Account of the Mollusca 



whiel'i now inhabit the British Isles and the surrounding Seas, with Particulars of 

 their Habits and Distribution. By J. aWYN JEFFEEYS, F.E.S., F.G-.S., etc. 

 Vol. I., containing the Land and Freshwater Shells, post 8vo, with nine plates. 



Price 125. 



JOHN VAN VOOEST, 1, PATEENOSTEE EOW. 



NOTICE. 



BRITISH CONCHOLOGY.— LovELL Reeve begs to announce that 



his ' Manual of the Land and Freshwater Mollusks of the British Isles,' which has 

 been three years in preparation, will be published in the Autumn. It will be illus- 

 trated with a series of highly-finished wood-engravings of the living animal of each 

 genus, and with two or more views, between three and four hundred in all, of the 

 sheU of each species. Price Vds. Qd. 



In a volume on the same subject, by Mr. Jeffreys, just pubhshed by Mr. Van 

 Voorst, illustrations are not given of the species, on the ground, as stated in the Pre- 

 face, that " the cost and price of the work would have been greatly increased, except 

 by resorting to the inartistic and unsatisfactory substitute of woodcuts." Mr. Eeeve 

 is happy to be able to state that this stricture cannot apply to his woodcuts, as the 

 proofs of nearly the whole of them were examined and highly approved of by Mr. 

 Jeffreys before the production of his work was even meditated. 



LOVELL EEEVE & CO., 5, HENEIETTA STEEET, COVENT GAEDEN. 



l^ew and. Enlarged 'Editions. 



I. — A new Edition, being the FiETn, 

 Enlarged and more fully illustrated, price l^-. 9c/'., cloth, 



IITTRODUGTOEY TEXT-BOOK OF GEOLOGY. 



By DAVID PAGE, T.G.S. 



II. — A New Edition, being the Thisd, 

 Enlarged and more fidly illustrated, price 6^., 



ADVANCED TEXT-BOOK OF GEOLOGY, 



DESCEIPTIVE AND INDUSTEIAL. 

 By DAVID PAGE, F.G.S. 

 WiLLiAzyi Blackwood axd Sons, Edinburgh and London. 

 Of wliom. may he had, hy the same Author, 

 HANDBOOK OF GEOLOGICAL TEEMS AND GEOLOGY. Qs. 

 THE PAST AND PEESENT LIFE OF THE GLOBE : being a Sketch in Outline 

 of the World's Life System. Qs. 



