THE MANUAL OF CONCHOLOGY. 



Founded by the late Geo. W. Tryon, Jun., continued under the care of the 

 Conchological Section. Academy of Natural Sciences of Philadelphia, by 

 Henry A. Pilsbry, Conservator. 



The Manual of ConeholOgy is a fully illustrated monography of recent 

 molluscs. Issued in octavo form, in quarterly parts. Each part comprises 64 

 (or more) pages of letterpress, and 15 to 20 plates. 



Two series are now in progress : the First Series, Marine Univalves, of 

 which sixteen volumes have appeared finishing the series as planned by its 

 illustrious founder. A supplemental volume to this series will be issued this 

 year, to contain the Dentaliidae. Of the SECOND Series, Terrestrial 

 Molluscs, ten volumes have been published, completing Helix with Index, 

 A few copies of Vol. IX. of this series, "Guide to the Study of Helices," 

 will be sold separately at the regular subscription price. Separate copies of 

 the Inde,\, suitable for the purposes of a Catalogue or Check list, can also be 

 had at $1.00 each. 



The Monography of the Bulimi is being continued. 



The illustrations of the Manual have received high commendation, and are 

 fully equal to the best figures of shells published. 



Prices : — Plain (uncoloured) edition, $3 00 per part. Coloured edition, $5'00 

 per part. Fine edition (both coloured and India-tinted plates) $8 "00 per part. 



Struetupal and Systematic Conchology, by Geo. W. Tryon, Jun. 



A Complete Conchological Text Book of 1,200 pages, 140 plates and 

 over 3,500 figures of Genera, Anatomy, &c. Three volumes bound in one. 

 Cloth. Price $6-oo. 



For further information or descriptive circular, with sample plates of Manual, 

 address : — 



S. RAYMOND ROBERTS, Treasurer. 



P. O. Address GLEN RIDGE, NEW JERSEY, U.S.A. 



JUST COMPLETED TO DATE. 



THE JOURNAL OF MALACOLOGY. 



Established in 1890 as "The Conchologist, a Journal of Malacology." 



Containing" Contributions by all the leading* Authorities 

 of the Day, edited by Walter E. CoUinge and Wilfred Mark Webb, 

 with the assistance in special departments of Rev. A. H. Cooke, F.Z.S., 

 King's College, Cambridge ; Walter Garstang, F.Z.S.; Charles Hedley ; 

 R. F. Scharff, Ph.D., B.Sc., Keeper of the Museum of Science and 

 Art, Dublin; E. R. Sykes, B.A., F.Z.S., Weymouth; Lieut.-Col. H. H. 

 Godwin- Austen ; S. Pace and B. B. Woodward, F.G.S., F.R.M.S. ; 

 complete from commencement in March 1891 to December 1897, 

 illustrated, 6 vols, 8vo. 



Will be sent free on receipt of remittance for 30s. 



JOHN GRANT, Bookseller, 31, Georg-e IV Bridg^e, Edinburgrh. 

 THE JOURNAL OF CONCHOLOGY. 



Vol. IX, No. 6, April, 1899. 



PRINCIPAL CONTENTS: 



Additions to British Conchology. J. T. Marshall. 

 Corrosion of Shells in Cabinets. L. St. G. Byne. 

 Land and Freshwater Mollusca of Somersetshire. E. W. Swanton. 

 Proceedings of the Conchological Society. Bibliography. 

 ANNUAL SUBSCRIPTION, 5s. 



Hon. Secretary, W. E. HOYLE, M.A., The Owens College, 

 Manchester. 



