SCIENCE-GOSSIP. 



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 Physiography in Case 



,, 12 Sections of Typical Rocks in case 

 New Chemical Crystals for use with the Micro- PolariBeops, 



Aconitin.Anemon'n, Uiatun, Heliotropin .. .. each 



Capitulum of Sunflower.. .. .. .. .. .. 



IS 



18 



W. WATSON ft SONS, 373, High Holborn, London, W.G. 



NEW AND INTERESTING MICROSCOPIC OBJECTS. 



■Whole "Water Spider, Argyroneta aquatica .. .. .. 5 



Gad Fly, Tahanus bovinus .. .. .. .. .. J 



Internal Organs and Alimentary System of Blow Fly, Male 



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



Hair of Polyxenus LaguniB, New Te6t Object .. .. .. ] 



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



Laburnum Moth, Cemoistoma laburnella, opaque, very beautiful 1 



LIUcMothjGracilariasyringella, opaque, very beautiful .. 1 



New Polycistinatrom Ciuffs Estate, Barbados, transparent .. 1 



„ ,, Chimborazo ,, ™.. 1 



Human Internal Ear, section, showing Cochlea.. .. ..0 1 



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



CLASSIFIED LIST, representing aStock of 40,000 first-class Objects, sent post free on application. 



MICROSCOPES AND APPARATUS. 



WATSON & SORB' TRIPOD EDINBURGH STUDENT'S MICROSCOPE ts 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 othee 



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

 WATSON ft SONS' VAN 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 Microscope, and 



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

 Full Illustrated Catalogue 0/ Microscopes and Apparatus sent post free on application to 



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



818, 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. 



NEW MICROSCOPICAL PREPARATIONS 



Write to the Jersey Biological Station for New Lists of the 

 Cheapest and Best Microscopical Slides in the market in 



BOTANY AND MARINE ZOOLOGY 



Some Specialities are — 



1. Bet of 48 specially chosen Slides illustrative of Ele- 



mentary Botany.— Specially suitable for teachers' and 

 students' use. Post free £1 Is. 



2. "Micro Studies in Marine Zoology and in Botany." 



Series of slides accompanied by descriptive letterpress and 

 original drawings and photomicrographs. Particulars on 

 application. 



3. Expanded Zoophytes and Polyzoa. Is. to Is. 6d. per slide. 



4. Sections of entire Flower and Leaf Buds and double-stained 



sections of Stems and Leaves. From 6d. each. 



Hundreds of grand slides at 5s. a dozen, all perfect and mostly 

 double-stained. 



SPECIAL DISCOUNTS during next two months. 



LANTERN SLIDES in Zoology and Botany in great variety. 

 Price 9s. per dozen. List on application. 



JAMES HORNELL, Biological Station, JERSEY. 



Established 1861. 



BIRKBECK BANK 



SOUTHAMPTON BUILDINGS, CHANCERY LANE, W.C 

 IWO-ASD A-HALF per CENT. INTEREST allowed on DEPOSITS 



repayable on demand. 

 TWO per CENT, on CURRENT ACCOUNTS, on.the minimum monthly 



balances, when not drawn below £100. 

 STOCKS and SHARES purchased and sold. 



SAVINGS DEPARTMENT. 



For the encouragement of Thrift the Bank receives small »uma on deposit 

 and allows Interest monthly on each completed £j . 



BIRKBECK BUILDING SOCIETY. 

 HOW TO PURCHASE A HOUSE FOR TWO GUINEAS PER MONTH 



BIEKBECK FREEHOLD LAND SOCIETY. 

 HOW TO PURCHASE A PLOT OF LAND FOR 5b. PER MONTH. 

 The BIRKBECK ALMANACK, with full particulars, post free. 



FRANCIS RAVENSCROFT. Manager. 



Now Ready. No. iz. Price Is. 



THE SCIENTIFIC ROLL 



Climate : Bar.ic condition. To be completed in 16 Numbers. 



Conducted bv ALEXANDER RAMSAY. 

 Prospectuses and subscription forms free by post on applica- 

 tion to the Publishers. 



A few of Nos. i to n still in print, price Is. each. 



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



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

 Post free id. extra. Now ready. 



London : O'DRISCOLL, LENNOX & CO., 



Printers and Publishers, 

 10 & 12, Elephant Road, Elephant and Castle. 



MAGI C LANTE RNS. 



NO SMELL. NO SMOKE. NO BROKEN GLASSES. 



GRAND 

 RESULTS. 



THE MARVELLOUS 



PAMPHENGOS. 



MARVELLOUS PAMPHENGOB.-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-lnch double Condensers, Portrait Lenses, Rack and Pinion, 

 four-wick Lamp, reduced to 18s. 6d. 



GILCHRIST SCIENCE LANTERN.-Oxyhydrogen Micro- 

 scopes, Polarlscopes, &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 

 Rellab'e Outfits in the world. 



THE ART OF PROJECTION, AND COMPLETE MAGIO 

 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. HUGHES, Patentee 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/- 



BORD'S PIANOS 



23 per cent, discount for cash or 14a. 6d. per month 

 (second-hand, 10s. 6d. per month), on the three years' 

 hire system. Illustrated Lists free, of CHAS. STILES 

 & CO., 40 and 42, Southampton Row, London 

 W.C. Pianos exchanged. 



