SCIENCE- GOSSIP. 



NOW READY. 



THE CHAPMAN JONES 



PLATE TESTER 



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REDl 



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REM 

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PLATETESTER 

 Sanger "sVcnlKHkCo 



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A simple 

 instrument for 



testing 



photographic 



plates and films. 



Illustrated 



booklet sent on 



receipt of 



id. stamp. 



SANGER SHEPHERD & CO., 



Factory and Offices: 5, 6 & 7 GRAY'S INN PASSAGE, 

 RED LION STREET, HOLBORN, LONDON, W.C. 



KODAK SPOOLS 

 DEVELOPED. 



Brownies, 9(1. 

 Pocket K., 1/6 

 No. 1 F.P.K., 2/- 

 No. 1 Panoram, 2/- 

 No. 2 Kodaks, 2/6 



Negatives promptly returned post free. 



Kodaks and all Photographic Requisites. 



A. HOWARD ( 



LATE \ 



EBB AGE J) 



Chemist, GT. YARMOUTH. 



MASON'S 



MICROSC OPICAL SPE CIMENS. 



SERIES OF BOTANICAL SECTIONS. INSECT DISSEC- 

 TIONS or MISCELLANEOUS, Is. Id. List for Stamp. 



Many new Preparations in hand for coming Season. 

 Practical Hints on Mounting. (Copyright Pamphlet) 6d. 



fl. G. MASON, 69 Park Rd., CLAP HAM, S.W. 



PHYSIOGRAPHY and GEOLOGY. 



COLLECTIONS and 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. 

 Collections made to illustrate all Works on Mineralogy, Petrology, 

 &*c, also for Prospectors and Mining Engineers. Minerals 



supplied for all purposes , either in Specimens or by Weight. 



Stores and Offices :— 1 KELSO PLACE, KENSINGTON, W 



New Catalogues and Lists Free. 



COLLECTIONS OF 



MINERALS, SBELLS, FOSSILS, to. 



For SALE. Also DUPLICATES cheap. 



Apply to F. m. HELE, 



Warwick Lodge, KNOWLE, near BRISTOL. 



LIVING SPECIMENS FOR 

 THE MICROSCOPE. 



Volvox, Spirogyra, Desmids, Diatoms, Amoeba, Arcella, Actino- 

 sphaerium, Vorticella, Stentor, Hydra, Floscularia; Stephanoceros t 

 Melicerta, and many other Specimens of Pond Life. Price is. per 

 Tube. Post Free. Helix pomatia, Astacus, Amphioxus, Rana, 

 Anodon, &c, for Dissection purposes. 



THOMAS BOLTON, 



25 BALSALL HEATH ROAD, BIRMINGHAM. 



BRITISH SPIDERS. 



I shall be pleased to help anyone working up local lists 

 of British Spiders by naming specimens FREE. Postage 

 for return of" collections should be enclosed. 

 FRANK P. SMITH, 



15 Cloudesley Place, Islington, 

 London, N. 



BROWNING'S 



PLATYSGOPIC LENS. 



WITH LARGER ANGLES, INCREASED FIELD, AND 

 IMPROVED DEFINITION. 



Engraved Real Size. 



AN ACHROMATIC COMBINATION. 



Combining the Definition of a Microscope with the 

 Portability of a Pocket Lens. 



" If you carry a small Platyscopic Pocket Lens (which every 

 observer of Nature ought to do)." — Grant Allen, in Knowledge. 



The Platyscopic Lens is invaluable to botanists, mineralogists, 

 or entomologists, as it focuses about three times as far from the 

 object as the Coddington Lenses. This allows opaque objects to 

 be examined easily. 



The Platyscopic Lens is made in four degrees of power, magnify- 

 ing respectively 10, 15, 20, and 30 diams. ; the lowest power, having 

 the largest field, is tbe best adapted for general use. 



The Lenses are set in Ebonite Cells and mounted in Tortoise- 

 shell Frames. 



Price of the Platyscopic Lens, mounted in Tor- s. d. 

 toiseshell, magnifying 10, 15, 20, op 30 dia- 

 meters, either power 15 



In Niekelised German Silver, either power ..17 6 



Combinations of any two powers, in Tortoise- 

 shell 27 6 



Combinations of any two powers, in Nickelised 

 German Silver .. .. 32 6 



II lustra' eel description sent free. 



JOHN BROWNING, 63 STRAND, LONDON, W.C. 



MARINE BIOLOGICAL ASSOCIATION OF 

 THE UNITED 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 ; Hormiphoria (preserved) ; Leptoplana ; Lineus, 

 Amphiporus ; 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. 



BIRDS' EGGS, SKINS, SHELLS, 

 INSECTS, APPARATUS, 



and Requisites Of all Kinds, sold, bought, and exchanged. 

 Fifty-page Price List on receipt of stamp. Established 20 years. 



CHARLES JEFFERYS, Naturalist, 



TETBTJBY, Gloucestershire. 



HEYNE BROS, (of u*«o, 



Naturalists & Entomological Dealers & Booksellers, 



Have just established themselves at 



1W STRAND, LONDON, W.C. ■ 



Fine Stock of European and Foreign Butterflies, Moths, 



Beetles, and all other Families of Insects. 



ENTOMOLOGICAL CABINETS, BOOKS, APPARATUS, 



PINS, &c. Price Lists on application. 



specimens sent for inspection and selection. 



Foreign and other Insects purchased or exchanged. 



FOR SALE.— Specimens of about 1,600 SPECIES OF 

 CONTINENTAL EUROPEAN PLANTS, either en bUc 

 or by selection. List sent on application. For terms apply — 

 Rev. W. H. PAINTER, Stirchley Rectory, near Shifnal, Salop. 



