SCIENCE- GOSSIP. 



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(Proprietors of Science-Gossip.} 

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This Company was formed for the purpose of conducting 

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Addre;s— The Secretary, Research Publishing Company, 

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MASON'S 



MICROSCOPICAL SPECIMENS. 



Splendid Section Limestone (Llanynynech), showing unique 

 Fossil remains post free 



Ditto Oldham Coal, showing Calamites, &c. . . post free 



Section through petiole of Hollyhock, showing attack of 



Fungus post free 1,. 



Practical Hints on Mounting (Copyright) post free 6d. 



New List now ready, 1 stamp. 



R, G. MASON, 69 PARK ROAD, CLAPHAM, S.W. 

 SECOND-HAND 



MICROSCOPES 



AND APPARATUS 

 BY ALL THE LEADING MAKERS, 



SWIFT'S "HISTOLOGLST," £\, £5, £6, £8 10s., £12 10s., 



to suit all classes of Students. 

 BECK'S "STUDENT,' £2 S s. to £12 10s. 

 WATSON'S " EDINBURGH," ,£4 10s. to £16 10s. 

 ZEISS' "IVa," complete, ,£16 10s. 



Also ASTRO. TELESCOPES and Accessories, TRANSITS, 



SEXTANTS, LEVELS and THEODOLITES. 



LIStS ON APPLICATION. 



INSTRUMENTS BOUGHT, SOLD, or EXCHANGED. 



A. CLARKSON & CO., 



28BARTLETT'S BUILDINGS, HOLBORN CIRCUS, London. 



CHARLES A. SNAZELLE, 



NATURALIST, 



And Dealer in Microscopic Sundries, Lantern Slides. &c. 



A Large Number of Botanical and Zoological Micro Preparations, 



by J. Hornell of Jersey, in Stock. 



TO TEACHERS, STUDENTS, AND OTHERS. 



Type Collections offered as below, correctly named and 



localised. 



MOLLUSCA (Land, Freshwater, and Marine). 



[NOTICE.— Not confined to British Species only.] 

 100 Species in 4-drawer Deal Cabinet . . . . . . . . 25/- 



150 ,, 6 „ „ „ 40/- 



250 „ 10 ,, „ „ .." 70/- 



{S mall Specimens in Glass-topped Boxes.) 



LEPIDOPTERA (British and Exotic). 



100 Specimens— (well selected) . . . . . . . . . . 20/- 



200 „ ,, 60/- 



Cabinets or Book Pattern. Store Boxes extra. 



COLEOPTERA (British). 



100 Species— (neatly carded) in Store Box .. .. 7,6 & 10/6 



250 ,, ,, ,, „ ,, 30/- 



500 ,, ,, „ „ „ 70/- 



Larger Collections offered at Special Terms. 

 Price Lists on Application. 



4 TOLLINQTON PARK, LONDON, N. 



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, 

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 The Director, Biologieal Laboratory, Plymouth. 



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, 

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P 



HOTOQRAPHIC 



every purpose, v/ U I n I O 



The most useful CAMERAS 



FITTED WITH UNEQUALLED 



ROSS, ZEISS or OOERZ 



LENSES. 



Every Requisite for Photography. 



Illustrated 

 PRICE LISTS 

 Post Free. 



DfJCC I f A Manufacturing 



IVV/OO, lwlU., Opticians, 



hi New Bond Street, London, W., and 

 31 Cockspur Street, Charing Cross. 



PHYSIOGRAPHY and GEOLOGY. 



Collections and Microscopic Slides to illustrate above, 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. 

 Mineral Specimens for Museums and Collectors, and all pur- 

 poses. Rock Specimens and Microscopic Sections of Rocks and 



Minerals. Collections for Prospectors, &C. 



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



New Catalogues and Lists Free. 



TO GEOLOGISTS. 



1902. EIGHTH YEAR OF DISTRIBUTION. 1902. 



Typical Collections from famed Barton Beds 



{Upper Eocene). 

 Series 1, 2, 3. Boxed, Named, and Localised. 30 Varieties Over 

 100 Specimens in each Series. 3s. each on receipt of postal orders. 



Also Suites of PARIS BASIN MOLLUSCA 



{Eocene, Oligoccnc, and Miocene). 

 Boxed, Named, and Localised. 40 Varieties, 6s. 6d. ; 100 Varie- 

 ties, 15s. ; by Parcel Post on receipt of Postal Orders. 

 R. CHARLES, Naturalist, 

 HIGHCLIFFE-ON-SEA, CHRISTCHURCH, HANTS. 



COLLECTIONS OF 



MINERALS, SHELLS, FOSSILS, to. 



M 



Fop SALE. Also DUPLICATES cheap. 



tppiy to jr» # ~YiL* HELE, 



Warwick Lodge, KNOWLE, near BRISTOL. 



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. 



