SCIENCE-GOSSIP. 



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



NEW AND INTERESTING MICROSCOPIC OBJECTS. 



Pigment Cells in section of Skin of N«!fro .. .. .. 



Group of about 150 selected perfect Diatomi 



„ ,, 30 Insects' Eggs .. 



Type Slide of SO British Foraminifera, each specie with itt name 



photographed beneath .. .. .. .. ,. 



Set of 12 elides illustrating Physiography in Case 



„ 12 Sections of Typical Rocks in case ... 



New Chemical Crystals for use with the Micro- Polariscope, 



Aconitin,Anemonin,Uratun, Heliotropin .. .. each 



Capitulum of Sunflower.. 



1 

 f 



f 



1 1 



II 



e 18 



Whole "Water Spider, Aigyroneta aquatica .. .. .. OS 



G«driy,TabanushoTinus .. .. .. .. .. 5 



Internal Organs and Alimentary System of Blow Fly, Male 



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



HaliofPolyxenusLagurus, New Test Object .. .. ..0 1 



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



Laburnum Moth, Cemoistoma labumella, opaque, Tery beautiful 1 

 Lilac Mothj Gracilaria sjringella, opaque, very beautiful ".. 1 



New Polycistinalrom Cmfl^'s Estate, Barbados, transparent .. 1 

 ,, ,, Chimborazo ,, "■.. 1 



HumanlntemalEar, section, showing Cochlea.. .. ..0 1 



Any of the aboTe Objects sent by retom. on receipt of remittance for price. 

 CLASSIFIED LIST, representing a Stock oj 1^0,000 first-class Objects, sent post free on application, 



MICROSCOPES AND APPARATUS. 



WATSOH a SOHB' TRIPOD EDIHBURQH BTUDBMT'B MICHOBGOPB Is suitable for Investigations with the hiebest powers. Tbe 



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



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

 WJLTBOH ft SOUS' VAR HBURCK HIGROBOOPE combines every mechanical convenience, with the utmost precision In all the 



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

 W&TBOH ft SONS' HEW CENTRINQ UHDBRFITTING oan be adapted to almost any make of Student's Microsoope, and 



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

 Full Illustrated Catalogue 0/ Microscopes and A pparatus 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 tbe International Exhibition, Antwerp, 1894 ; 37 Gold and other Medals at International Ezblbltloni 

 including s 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 — 



I. Set of 18 specially chosen Slides illustrative of Ele- 

 mentary Botany. — Specially suitable for teachers' and 

 students' use. Post free £1 Is. 



3. "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 fid. each. 



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

 dottble-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. 



EsTABLiaHBD 1861. 



BIRKBECK BANK 



SOUTHAMPTON BUILDINGS, CHANCEBT LANE. W.C 



TWO-AND A-HALF per CENT. INTEBE8T aUowed on DBP08ITB 

 tepayable on demand. 



TWO per CENT, on CURRENT ACCOUNTS, oft th« mliiininm monthly 

 balance!, when not drawn below JCIOO. 



STOCKS and SHARES purchaied and sold. 



8AVING8 DEPARTMENT. 



For the encouragement of Thrift the Bank recelTeiimalliiunioii depoiit 

 and allows Interest monthlj' on each completed £1. 



BIEKBECK BUILDING SOCIETY. 

 HOW TO PURCHASE A HOUSE FOR TWO GUINEAS PER MONTH 



BIBEBECE FBEEHOLD LAND SOCIETT. 

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

 The BIRKBEOK ALMANACK, With full particulan, poit free. 



FRANCIS BATEN8CR0FT, Manager. 



THE ZOOLOQICAL SOCIETY'S GARDENS, 



REGENT'S PARK. 



ate OPEN DAILY (except Sundays), from g a.m. till Sunset 



Admission is.; on Mondays, 6d. Children 6d. 



Amongst the recent additions are three Lion Cubs, presented by 



C. A. Osborne, Esq., and two Ivory Gulls from Spitzbergen. 



ROYAL BOTANIC SOCIETY'S GARDENS, 



REGENT'S PARK. 



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. 



lAGI C LANTE RNS, 



NO SHELL. NO SMOKE. NO BROKEN GLASSES. 



GRAND 

 RESULTS 



THE MARVELLOUS 



PAMPHENOOS. 



MARVELLOUS P&MPHENQOS.— 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 Unlyersal Lantarn, 

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

 four-wick Lamp, reduced to i8s. 6d. 



QILCHRIST SCIENCE LAHTEBH.— Oxyhydrogen Micro- 

 ■oopeB, Polarisoopes, &c. The Cinematograph for LlYlng 

 Pictures. 



BLEGAHT MAHOQANT BIUNIAL, brass fronts, £6 los. ; 

 blow-through Safety Jets, 8s. 6d. ; mixed Gas Jet, us. 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 HAGIO 

 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. Mai-den 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, Patbntbb and Spboialibt. 

 Brewster House, Mortimer Road, KIngsland, London, H. 



Sbcond-Hand Lanterns and Slides— BargaiiTs. 



ILLUSTRATED LISTS FREE. 



60 Beaatlfnlly Colonred Blldei on loan for 3H 



A READABLE SCIENTIFIC BOOK ON INSECTS. 



424 pp. -.inth 21 Illustrations. Cloth, 28. 6d., post free. 



ELEMENTS OF ENTOMOLOGY 



An Outline of the Natural History and Classification of 



British Insects. 



By WILLIAM S. DALLAS, F.L.S. 



GURNEY & JACKSON, 1, Paternoster Row, E.G. 



(Successors to Mr. VAN VOORST). 



