SCIENCE- GOSSIP. 



MASON'S 



MICROSCOPIC AL SPE CIMENS. 



SERIES OF BOTANICAL SECTIONS. INSECT DISSEC- 

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



Many new Preparations in hand for coming Season. 

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



R. G. MASON, 69 Park Rd., CLAPHAM, S.W. 



LIVING SPECIMENS FOR 

 THE MICROSCOPE. 



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

 sphaerium, Vorticella, Stentor, Hydra, Floscularia, Stephanoceros, 

 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. 



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, Perdicellirra ; 

 Holothuria, Asterias, Echinus; Ascidia, Salpa (preserved), Scyllium, 

 Raia, etc., etc. For Prices and more detailed Lists apply to 



The Director, Biological Laboratory, Plymouth. 



ROYAL BOTANIC SOCIETY'S GARDENS, 



REGENT'S PAHK 



GARDENS OPEN DAILY from 9 a.m. to Sunset. SUNDAYS 

 from 2 p.m. to Sunset. Admission by Orders from Fellows of the 

 Society only. 



Medals and Highest Awards at all 



Great International Exhibitions. 



ROSS, Ltd., 



Manufacturers of Celebrated 

 Photographic Lenses, 

 Field and Studio Cameras, 

 New Hand Cameras, 

 Science & Enlarging Lanterns, 

 Microscopes and Objectives, 

 Sporting & Naval Telescopes, 

 Field, Marine & Opera Glasses, 

 &c. &c. 



PHOTOGRAPHIC 

 for OI ITFITS 



every purpose. w ^ * » * * *-* 



The most useful CAMERAS 



FITTED WITH UNEQUALLED, 



ROSS, ZEISS or QOERZ 



LENSES. 



Every Requisite for Photography. 



Illustrated 

 PRICE LISTS 

 Post Free. 



DrkCQ \ iA Manufacturing: 



ROOO, LIU*, Opticians, 



in New Bond Street, London, W., and 

 31 Cockspur Street, Charing Cross. 



BECK'S NEW 'LONDON 5 MICROSCOPES 



(FIVE 3VEODEIL.S). 



MICROTOMES. 

 CENTRIFUGES. 

 MOUNTING 



MATERIALS. 

 COLLECTING 



APPARATUS. 

 OBJECT 



CABINETS. 

 OBJECTS. 

 STAINS. 



No. H25 J " London" 

 MICROSCOPE, as 

 figured, with two eye- 

 pieces, two object 

 glasses (§-inch and 

 Jj-inch), double nose- 

 piece, and packed in 

 mahogany case. 



£6 1 6 



FTJXjL CATALOG-UE OIT APPLICATIOliT. 



R. & J. BECK, Ltd., 68 Cornhill, E.C. 



