SCIENCE-GOSSIP. 



W. WATSON & SONS, 313, High Holborn, London, W.G. 



NEW AND INTERESTING MICROSCOPIC OBJECTS, 



Pigment Cells in section of Skin of Negro 

 Group of about 150 selected perfect Diatoms 



„ ,, 30 Insects' Eggs .. 



Type Slide of 50 British Foraminifera, each specie with its name 



photographed beneath .. .. .. . . 



Set of 12 slides illustrating PhyBiography in Case 



,, 12 Sections of Typical Rocks in case 

 New Chemical Crystals for use with the Micro-Polariscops, 



Aconitin,Anemonin, Uiatun, Heliotropin .. .. each 



Capitulum of Sunflower. . 



1 1 



IS 

 18 



"Whole "Water Spider, Argyroneta aquatica .. .. .. 2 



Gad Fly,Tabanus boTinus .. .. .. .. ..0 2 



Internal Organs and Alimentary System of Blow Fly, Male 



and Female .. .. .. .. .. .. each 3 



Hair of Polyxenus Lagurus, New Test Object .. .. .. 1 



Fleas of Sparrow, Male and Female, on one slide .. ..0 2 



Laburnum Moth, Cemoistoma laburnella, opaque, very beautiful 1 



Lilac Moth t GracilariasyringelIa, opaque, very beautiful .. 1 



New PolyciBtinatrom Ciuff'8 Estate, Barbados, transparent .. 1 



,, ,, Chimborazo ,, ""., 1 



Human Internal Ear, section, showing Cochlea.. .. .. 1 



Any of the above Objects sent by return on receipt of remittance for price. 



CLA SSIFIED LIST, representing a Stock of 40,000 first-class Objects, sent post free on application. 



MICROSCOPES AND APPARATUS. 



WATSON & SONS' TRIPOD EDINBURGH STUDENT'S HIOROSOOPE Is suitable for Investigations with the highest powers. The 



quality and workmanship are the finest possible, and It is unequalled for stability and convenience of manipulation by any oihei 



medium sized or Student's Instrument. Price, from £4 5s 

 WATSON & SONS' YAN HEURCK MICROSCOPE combines every mechanical convenience, with the utmost precision in all the 



working parts, and is unsurpassed for Photo-Micrography and all research of the most delicate nature. 

 WATSON ft SONS' NEW CENTRING UNDERFITTING can be adapted to almost any make of Student's Mlcrosoope, and 



permits of the Substage Condenser being made precisely central with the objective. Particulars on application. 

 Full Illustrated Catalogue of Microscopes and Apparatus sent post free on application to 



W. WATSON & SONS, Opticians to Her Majesty's Government, 



313, HIGH HOLBORN LONDON, W.C., and 78, SWANSTON STREET, MELBOURNE AUSTRALIA. 



Awarded the GRAND PRIX at the International Exhibition, Antwerp, 1894 ; 37 Gold and other Medals at International Exhibitions 



Including 5 Highest Awards at the World's Fair, Chicago, 1893, for Excellence of Manufactures. 



MAGI C LANTE RNS. 



MO SMELL. NO SMOKE. MO BROKEN GLASSES. 



GRAND 

 RESULTS. 



THE MARVELLOUS 



PAMPHENGOS. 



MARVELLOUS PAMPHENGOS.— The finest Oil-lighted Lan- 

 tern extant ; equals Limelight ; stood the test against all 

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

 School Boards. Particulars free. The Universal Lantern, 

 4-inch double Condensers, Portrait Lenses, Rack and Pinion, 

 tonr-wlck Lamp, reduced to 18s. 6d. 



GILCHRIST SCIENCE LANTERN.— Oxyhydrogen Mlcro- 

 ■oopes, Polariscopes, &c. The Cinematograph for Living 



ELEGANT MAHOGANY BIUNIAL, brass fronts, £6 10s. ; 

 blow-through Safety Jets, 8s. 6d. ; mixed Gas Jet, 12s. 6d. Mr. 

 Hughes's Grandly Illustrated Catalogue, over 160 Original Wood 

 Engravings. Price, 6d. ; Postage, 3d. Cheapest, Best and Most 

 Reliable Outfits In the world. 



THE ART OF 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. Prof. Malden says : — " Thoroughly practical 

 Work ; should be studied by the experienced operator and 

 amateur alike. Price, bound In cloth, 3s. 6d. ; Postage, sd. 



W. C. HUGHE8, Patbntbb and Specialist, 

 Brewster House, Mortimer Road, Kings/and, London, N, 



Second-Hand Lanterns and Slides— Bargains. 



ILLUSTRATED LISTS FREE. 



SO Beautifully Coloured Slides on loan for 3/- 



MICROSCOPICAL. 



Well-mounted objects, especially suitable for exhibi- 

 bition, for sale (from 6d.), or exchange for good 

 unmounted material in fair quantities; send for lists. 



OBJECTS SENT ON APPROVAL. 



FRANK P. SMITH, 15, Cloudesley Place, Islington, N. 



" A very useful scries of small manuals on subjects of common 

 interest." — Spectator. 



THE LIBRARY OF USEFUL STORIES 



Small 8vo, cloth. Price Is. each Volume; 

 Post free, Is 2d. 



" The more Science advances, the more it becomes concentrated in 

 little books." — Leibnitz. 



THE STORY OF THE STARS. By G. F. Chambers, F.R.A.S., 



With 24 Illustrations. 

 THE STORY OF PRIMITIVE MAN. By Edward Clodd. With 



88 Illustrations. 

 THE STORY OF THE PLANTS. By Grant Allen. With 49 



Illustrations. 

 THE STORY OF THE EARTH IN PAST AGES. By H. G. 



Seelev, F.R.S. With 40 Illustrations. 

 THE STORY OF THE SOLAR SYSTEM. By G. F. Chambers, 



F.R.A.S. With 28 Illustrations. 

 THE STORY OF A PIECE OF COAL. By E. A. Martin. With 



38 Illustrations. 

 THE STORY OF ELECTRICITY. By J. Munro. With 100 



Illustrations. 

 THE STORY OF EXTINCT CIVILIZATIONS OF THE EAST. 



By R. E. Anderson, M.A. With Maps. 

 THE STORY OF THE CHEMICAL ELEMENTS. By M. M. 



Pattison Muir, M.A. 

 THE STORY OF FOREST AND STREAM. By James Rodway, 



F.L.S. With 27 Illustrations. 

 THE STORY OF THE WEATHER. By G. F. Chambers, 



F.R.A.S. With 50 Illustrations. 

 THE STORY OF THE EARTH'S ATMOSPHERE. By Douglas 



Archibald, M.A. With 44 Illustrations. 

 THE STORY OF GERM LIFE. By H. W. Conn. With 34 



Illustrations. 

 THE STORY OF THE POTTER. By C. F. Binns. 



Illustrations. 

 THE STORY OF BRITISH COINAGE. 



With 108 Illustrations. 

 THE STORY OF LIFE IN THE SEAS. 



D.Sc, F.R.S. With 42 Illustrations. 

 THE STORY OF PHOTOGRAPHY. By A. T. Story. With 



38 Illustrations. 

 THE STORY OF RELIGIONS. By the Rev. E. D. Price. 

 THE STORY OF THE COTTON PLANT. By F. Wilkinson. 



F.G.S. With 38 Illustrations. 



With 57 

 By G. B. Rawlings, 

 By S. J. Hickson, 



GEORGE NEWNES, Ltd., 7-12, Southampton Street, Strand, London. 

 Now Ready. No. 13. Price Is. 



THE SCIENTIFIC ROLL. 



Climate : Baric condition. To be completed in 16 Numbers. 



Conducted by ALEXANDER RAMSAY. 

 Prospectuses and subscription forms free by post on applica- 

 tion to the Publishers. 



A few of Nos. 1 to 12 still in print, price Is. each. 

 The Geological Time Papers and Charts. No. 1. The "R" 

 Geological Time Scale, price id. Nos. o to 3 Charts, 31/. each. 

 Post free id. extra. Now ready. 



London : O'DRISCOLL, LENNOX & CO., 



Printers and Publishers, 

 10 & 12, Elephant Road, Elephant and Castle. 



