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

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



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Communications have been received from Prof. J. Morris ; T. H. Readwin, RGr.S. ; Rev. 

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"ORITISH POSSILS.— A Catalogue of British Fossils, by John Morris, 



F.G.S., comprising the Genera and Species hitherto described, with references to 

 their Geological distribution and to the localities in which they have been found. 

 This work forms a Complete Index to the publications of the Palseontographical Society, 

 Geological Society, and other valuable works. Second Edition, price 12s. London : 

 J. Tennant, 149 Strand ; Taylor and Francis, Red Lion Court, Fleet Street. Copies 

 in sheets for interleaviiigr, price JOs. (post free), to be had of J. Morris, Kensington. 



TO TRUSTEES OF MUSEUMS AND COLLECTORS OF FOSSILS. 



IMMEDIATE DISPOSAL.— A valuarble collection of FossHs, 

 Minerals, Shells, and recent Corals. The Fossils are principally from the 

 Silurian and Carboniferous strata. 

 For particulars apply to Mr. Meredith, Surgeon, Oswestry. 



l^OSSIL-FISH, FEOM THE OLD RED SANDSTONE, FOR SALE. 

 -■- — Five assorted specimens of the Osteoleapis sent on receipt of Post Office Order, 

 for 10s. 6d. Also, specimens of Coccosteus Diplopterus, &c., at very low prices. Fossils 

 from other Formations at equally low prices. 



Also, some fine and rare minerals, precious stones, &c. 



Geological and other Scientific Books and Periodicals, British and Foreign, forwarded 

 post free immediately on receipt of the published price. 

 James R. Gregory, 59, Frith Street, Soho, London, W. 



