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EXCHANGE. 



Duplicates — Numerous, Macro and Micro. Please send marked lists and I will make 

 an offer. Desiderata — Munda, Gracilis, Orepuscularia, Biundvlaria, Piniperda, Opima, 

 Hepatica, Fibrosa, Orbona (Scotch), Stabilis (vars.), Cerago, Mepandata, Obscurata, Atom,' 

 aria (not Kent or Surrey), Progemmaria (dark), Zeueophearia (vars.), Albulate, &c. — J. W. 

 Tutt, Westcombe Park, S.E. 



In Fcap. Svo., Cloth, price $s., post free. 

 "~ THE 



SHELL-COLLECTOR'S HANDBOOK 



FOR THE FIELD. 



By J. W. WILLIAMS, M.A., D.Sc, Editor of " The Naturalists' Monthly." 



fl^p-HIS Manual contains full details of every Order, Genus, Species, and Variety of 

 British Land and Fresh-water Shells, known to the Conchological Society, up to the 

 date of publication. Explicit instructions are given for the collecting and preservation of 

 molluscs: complete lists of all varieties are supplied, interleaved, so that the collector can 

 annotate in any way he may desire. The habitat of every species is clearly indicated, and 

 the result of the long experience of the Author placed as concisely as possible at the dis- 

 posal of the student. The anatomy of the snail is also described, and a full glossary of 

 conchological terms appended. 



LONDON: ROPER & DROWLEY, 29, LUDGATE HILL, E.C. 



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FIFTH YEAR OF PUBLICATION. 



ririn icnn ur ru di_iumi iuin. 



THE JOURNAL OF 



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Published Quarterly, Price 1/6. 

 Is the recognised organ of the POSTAL MICROSCOPICAL SOCIETY, 

 and contains a number of valuable and interesting articles relating to every 

 department of Microscopy and the allied Sciences, written by experienced 

 Microscopists and Specialists, and illustrated by a number of Lithographic 



rates. It is not only one of the largest and cheapest, but also one of the 

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Both Journals are Edited Published by Mr. Alfred Allen, Hon. Sec. of the 

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