February 24, 1910] 



NA TURE 



LANTERN SLIDES. 



Beautifully painted to order in 



pt-'inaiient transparent colours ; 



originals being faithfully 



followed. 



Lecturers should consult our 



new 96 pp. Slide Catalogue 



" E," post free. 



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BROADHURST, CLARKSON & CO., 



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DEALERS in SECOND-HAND TELESCOPES, MICRO- 

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receiving some very fine 

 e beautifully cut and mc 



optc Sections of above, 

 nd at moderate prices, 



LIVING 

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Nere: 



WATKINS & DONCASTER, 



Naturalists and Manufacturers of 



CABINETS AND APPARATUS 



SECTIONS OF COAL PLANTS 



JAMES R. GREGORY & CO., 



Mineralogists, <Sc. , 



139 FUILrKAlVE ieOAI>, S.^W. 



Near South Kensington Station. Telephone: 2S^, Western. 



SPECIMENS FOR 

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mids, Diatoms, Amosba, Arcella, Actinosphaerium, 

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 specimens of Pond life. Price is. per Tube, Post Free. Helix 

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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. Alcy 

 Dnium ; Hormiphora (preserved) ; Leptoplana ; Lineus, Amphiporus, 

 Aphrodite, Arenicola, Lanice, Terebella ; Lepas, Balanus, 



anunarus, Ligia Mysis, Nebalia, Carcinus ; Patella, Buccinum, Eledone, 



ictens Buguta, Crisia, Pedicellina, Holothuria, Asterias, Echinus, 



icidia, Salpa (preserved), Scyllium, Raia, &c., &c. 



For prices and more detailed lists apply to 



Biological Laboratory, Plymouth. THE DIRECTOR. 



SPECIAL SHOW-ROOM FOR CABINETS. 



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A LARQB STOCK OF INSECTS, BIRDS' EQQS AND SKINS. 



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36 STRAND, LONDON, W.C. 



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FOSSIL COAL PLANTS. 



MICROSCOPIC SECTIONS. 



Lantern Slides and Impressions of the above supplied at the shortest 

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Microscopic Sections of all types of BRITISH and FOREIGN ROCKS 

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3VE IIW £: XS, .Al. X^ s 



Some Larg-e Clear 



SELENITE CRYSTALS 



WITH FLUID INCLUSIONS 



novt on view and sale at 



THOMAS D. RUSSELL'S 



Ground-Floor Show Rooms, 



11 JOHN STREET, BEDFORD ROW, LONDON, W.C. 



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