SCIENCK-GOSSIP. 



STEVENS' AUCTION ROOMS. 

 TUESDAY, MAY 16th. 



THE VALUABLE COLLECTION OF BIRDS 



formed by tne late Mr. J. Wbitelev, and the Collections of 

 British and Foreign Insects, Birds, Minerals and other Natural 

 History Specimens formed by the late Mr. Hadfield, of Newark. 



Mr. J. C. Stevens will sell the above by auction at his Great 

 Rooms, 38, King- street, Covent Garden, as above, at 12.30p.m. 

 precis ly . 



On view day pri r, 10a.m. to 4 p.m., and m u-mngof sile.and 

 catalogues had. 



SCIENTIFIC^STRUMENTS, 



ncluding all kinds of Optical and Photographic Apparatus, 

 Electricals, Mathematical, Surgical and Mucical Instiuments, 

 and Miscellaneous Property of every description, every Friday 

 at 12.30. 



Goods received at any time, and included in the Sales. 



LOUIS'S MICROSCOPICAL OBJECTS 



24 Series, Unmounted, of CU 

 Series, 4s. per Series. 5 Series 

 2s. each. 5 Series of 24 Micro: 

 Sections of Woods, 2s. each. 



Cleaned Unmounted Dia- 

 toms. 



Series i. — 4s. per 12 tubes. 

 Aulacodiscus Kittonii. 

 Synedra iilna typica. 

 Prasiez (Hungary). 

 Millbury (Mass. U.S.A.) 

 Sing Sing (Hudson River, 



U.S.A.) 

 Cherryfield (Maine, U.S.A.) 

 St. Saturnin (France). 

 Bain's lower (Oamaru). 

 Bodos (Hungary). 

 Simbirsk (Russia). 

 Licmophora flabellata. 

 Striatella unipunctata 



amed Diatoms, 12 tubes in each 

 of 24 Foraminiferous Sands at 

 hngi at 2s. each. 7 tr eries of 24 



1 24 Trans. Sect, of Woods. 



I Series xxviii. — Unmounted 2s. 



Pinus pinea. 

 Pinus laricio. 

 Pinus montana. 



8uercus Sessiliflora. 

 arpinus betuhlS. 

 Ulmus campestris. 

 Tilia parviflora 

 Clematis vitalba. 

 Myrtus communis. 

 Salix caprea 

 Platanus orientalis. 

 Populus alba, 

 Etc., etc. 



;lla unipunctata. 



W. WEST, 95, NORTON LANE, BRADFORD. 



Send stamp for List. 



MAGIC LANTERNS. 



NO BROKEN GLASSES. 

 MARVELLOUS 



PAMPHENGOS. 



MARVELLOUS PAMPHENGOS. - The finest Oil-lighted 

 Lantern extant; equals Limelight; stood the test against all 

 imitations. Over 3,000 sold— supplied to the Government and 

 School Boards. Particulars free. 



GILCHrUST SCIENCE LA.NTERrT.-0xy hydrogen Micro- 

 scopes, Polariscopes, &c. The Cinematograph for Living Pictures. 



Mr. Hughes's Grandly Illustrated Catalogue, over 160 Original 

 Wood EngTavrngs, Price, 6d. ; Postage, 3d. Cheapest, Best and 

 Most Reliable Outfits in the world. 



THE ART OP PROJECTION, AND COMPLETE MAGIC 

 LANTERN MANUAL, by an Expert. Over 100 fine Illustrations, 

 with priceless wrinkles. How to use Oil, Limelight, Dissolving, 

 Electric, Microscopic and Polarising Lanterns, Slide Making, 

 Painting, &c. Price, bound in cloth, 3s. 6d. ; Postage, 5d. 



W. C. HUGHES, Patentee and Specialist. 



Brewster House, Mortimer Road, Kingsland, London, N, 



Second-Hand Lanterns and Slides — Bargains. 



ILLUSTRATED LISTS FREE. 



50 Beautifully Coloured Slides on loan for 3s. 



THE SCIENTIFIC ROLL 



AND MAGAZINE OF SYSTEMATIZED NOTES. 



This Work is a Valuable GUIDE, BIBLIO- 

 GRAPHY and INDEX to SCIENCE. 



This work, now in course of publication, embraces : 



1. A Bibliography classified according to subjects arranged 

 (1) according to the year of publication, and (2) alphabetically 

 under each year according to the name of the author ; each item 

 has its distinctive number for reference imrposes. 



2. An Index, which, although arranged alphabetically, is 

 classified in groups more than is usual in an index, the object 

 being to render it possible, at some future time, to amalgamate 

 the various subject indexes into one general classified index. 



3. A Systematized Collocation of Facts grouped according to 

 their relationship to each other. The aim of the whole is to 

 enable any person engaged in scientific research to find the in- 

 formation he seeks with a minimum expenditure of trouble, 

 time, and cash. 



As the work is the result of forty years' labour, its main 

 features cannot be fully described in a short advertisement. All 

 persons interested in the classification of scientific data, especi- 

 ally those commencing a research, are invited to send for a 

 prospectus and fuller particulars to 



A. RAMSAY, 

 4, Cowper Road, Acton, London, W. 



MARINE BIOLOGICAL ASSOCIATION OF 

 THE UNI i ED KINGDOM. 



THE LABORATORY, PLYMOUTH. 



The following Animals can always be supplied, either living or 

 preserved by the best methods : — 



Sycon ; Clava, Obelia, Sertularia; Actinia, Tealia, Caryophyllia, 

 Alcyonium ; Hormiphora (preserved) ; Leptoplana; Lineus, Am- 

 phiporus ; Nereis Aphrodite, Arenicola, Lanice, Terebella ; Lepas, 

 Balanus, Gammarus, Ligia, Mysis, Nebalia, Carcinus ; Patella, 

 Buccinum, Eledone, Pecten ; Bugula, Crisia, Perdicellina ; 

 Holothuria, Asterias, Echinus : Ascidia, Salpa (preserved), 

 Scyllium, Raia, etc., etc. 



For Prices and more detailed Lists apply to 



THE DIRECTOR, Biological Laboratory, PLYMOUTH. 

 PHYSIOGRAPHY AND GEOLOGY. 



COLLECTIONS&MICROSCOPIC SLIDES 



As advised by Science and Art Directory, arranged by 



JAMES R. GREGORY & Co., Mineralogists, &c. 



To Science and Art Department, British, Indian and Colonial 

 Museums, &c. 



Novelties and Rare Gems and Precious Stones. 



Mineral Specimens for Museums and Collectors, and all purposes-. 



Rock Specimens and Microscopic Sections of Rocks a7id 



Minerals cut to order. 



New and Valuable Mineral Specimens constantly arriving. 



Stores and Offices:-], KELSO PLACE, KENSINGTON, W. 



New Catalogues and Lists Free. 



SOUTHAMPTON BUILDINGS, CHANCERY LANE, W.C. 



TWO-AND-A-HALF per Gent. INTEREST allowed on De- 

 posits, repayable on demand. TWO per CENT, on CURRENT 

 ACCOUNTS on the minimum monthly balances, when not 

 drawn below £lOO. STOCKS and SHARES purchased and sold. 

 SAVINGS DEPARTMENT. 

 For the encouragement of Thrift the Bank receives small sums 

 on deposit, and allows Interest monthly on each completed £1. 

 BIRKBECK BUILDING SOCIETY. 

 How to PURCHASE A HOUSE for Two Guineas per Month. 



BIRKBECK FREEHOLD LAND SOCIETY. 

 How to Purchase a PLOT OF LAND for 6s. Per Month. 

 The BIRKBECK ALMANACK.with full particulars, post free. 

 Established 1851. FRANCIS RAVENSCROFT, Manaqer. 



BORD'S 



PIANOS 



25 Per Cent. Discount for Cash, or 14-s. 6d. Per Month 

 (Second-Hand, lOs. 6rt. Per Month), on the Three Tears' 

 Hire System. Illustrated Lists free, of CH AS. STYLES 

 & CO., 40 and 42, Southampton Row, London, W.C. 

 Pianos Exchanged. 



