THE NAUTILUS. 



BACK VOLUMES OF THE NAUTILUS. 



We can furnish only the following Vols, complete, Price, $1.00 each. 



Vol. IV. May, 1890, to April, 1891. 

 Vol. V. May, 1891, to April, 1892. 

 Vol. VI. May, 1892, to April, 1893. 



Volume III (Numbers 2 and 12 wanting) $1.00. 20 cents per 

 copy will be paid for Nos. 2 and 12. Vols. I and II were known 

 as the "Conckologist's Exchange." We cannot furnish these, but a 

 liberal price will be paid for the first seven numbers of Vol. 1. 



ABlTBrnTISIK® HATBS. 



Advertisements -will be inserted at the rate of $1.00 per 

 inch for each insertion in advance. Smaller space in propor- 

 tion. A discount of 25 per cent, -will be made on insertions of 

 six months or longer. 



Address, C. W. JOHNSON, 



Wagner Free Institute, 



Philadelphia, Pa. 



SPECIIVIEN TRAYS 



FOR <'ABINETS. 



T^rlr>r^ T,^r^ork it H r. PAPER BOX MAKERS, 



esse ones k lio., 



J ^^ J ^ ' 615 COMMERCE STREET, 

 PHILADELPHIA. 



G. B. SOWEKBY, 



121 Fulham Road, London, S. W. 



Has always on hand a fine stock of Recent Shells from which 

 selections may be made on the premises or specimens sent for 

 selection. 



Collections — Illustrative of Generic and sub-generic forms and 

 species, from £1 to £500. 



Collections Purchased. — Specimens Bought orExchanged. 

 — Correspondence invited with Residents in or visitors to places 

 where shells and other objects are obtainable. 



" Thesaurus Conchyliorum," by G. B. Sowerby, F. L. S., in 

 44 parts, 25s. each part (less for the whole work) ; any Part or 

 Monograph may be had separately. 



"Illustrated Index of British Shells," by G. B. Sowerby, 

 F. L. S., new edition (1887), with 26 colored plates, 750 figures. 

 Imperial 8vo. Cloth, oSs. 



" Marine Shells of South Africa." — A catalogue of all the 

 known species (1892), with references to figures in various works, 

 descriptions of new species and figures of such as are new, little 

 known, or hitherto unfigured. Imperial 8vo. Cloth, 12s. nett. 



