SCIENCE-GOSSIP. 



BAUSCH & LOMB'S 



LABORATORY, BACTERIOLOGICAL 



AND 



ADVANCED MICROSCOPE. 



IVtODEL B.B. 

 THE POPULAR FAVOURITE. 



With Screw Substage, Iris Dia- 

 phragm, Coarse and Fine Adjust- 

 ment, Brass Stand, in Polished 

 Wood Cabinet, with Lock and 

 Key, £5 0. 



HUYGHENIAN EYEPIECES. 



2-in. ij-in. i-in. J-in. Ain. 



hh 5/- 5/- 5/- 5/- 

 B. & L.'s SPECIALLY COR- 

 RECTED HIGH-CLASS OB- 

 JECTIVES for Laboratory Work. 

 Dry. . 2/3 in. N.A. 0*24, 1 5/- ea. 



„ , 1/6 in. „ 0-82, 30/- „ 

 Oil Immersion — 



1/12 in. ,, 1*32, 100/- ,, 



Our 1/6 in. N.A. o'66 specially 

 constructed for Blood Correcting. 



We have all Models on Stock 

 complete with Objectives, &c., 

 38,6 to £30 each. 



A. E. STALEY & CO., 



35 ALDERMANBURY, LONDON, E.G. 



(BAUSCH & LOMB'S REPRESENTATIVES FOR GREAT 

 BRITAIN AND EXPORT.) 



y-PAGE FULLY ILLUSTRATED DESCRIPTIVE 

 LIST THREEPENCE TO COVER POSTAGE. 



N.. 



" As an instance of the High-class chapacter of our 

 Stands and Perfection of our Objectives, we may 

 say we have now sold over 30,000 of these Micro- 

 scopes; this fact in Itself Is sufficient guarantee of 

 their merit and quality. 



>. — Sec Notes on on?- Instruments in the New Edition of 

 Carpenter on the Microscope. 



JAMES SWIFT & SON. 



Seven Gold Medals Awarded for Optical 

 Excellence. 

 NEW MODEL RESEARCH MICROSCOPE 

 After Prof. DELEPINE. 



Consisting of the follow- 

 ing, viz.: Coarse Adjust- 

 ment by Spiral Rack and 

 Pinion, Slow Movement 

 by M icrometer Screw, 

 Extra Large Stage, 

 Triple Dustproof Nose- 

 piece, 5", \" , andx/' Ob- 

 jectives, Abb^ Condenser 

 with Iris Diaphragm and 

 Focussing Adiustment to 

 same, in Mahogany 

 Cabinet, £15. 

 Illustrated List on 

 application. 



University Optical 

 Works, 



81 Tottenham Court Rd. 



TO READERS ABROAD. 



"WANTED, Butterflies, Moths, Beetles, Flies and other 

 Insects ; also Scorpions, Spiders, &c., from Foreign Countries. 

 Full value remitted by return mail for specimens sent. 



N.B. —Pack carefully so that they reach us undamaged. 



Addresses also invited for Sale or Excbang:e. 



Dealers in Entomological Specimens, 

 Cabinets, Books, Apparatus, Pins, &:c. 



Fine Stock of European and Foreign Butterflies, Moths, 

 Beetles, and all other Families of Insects. 



HEYNE BROS., 



iTo and III STRAND, LONDON, W.C. 

 Price Lists on application. Speciviens submitted Jbr selection. 



Microscopical and Laalern Slides 



Illustrative of every department of 



ZOOLOGY, 

 BOTANY, 

 GEOLOGY 



AND 



TEXTILE INDUSTRIES, 



From w s. <l.oz. 



Root Structure, Stem Structure, Leaf and 



Floral Structure, Ovaries, Fruits, Seeds, &c. 



Cotton, Flax, Hemp, Jute, China Grass, 



Silk, Wool, &c. 



The Student's Series of Microseopical Studies 



in Elementary and Advanced Botany, 



comprising 48 Preparations wiiii Diagrams, 



£i IS. net. 



The Type Preparations in this Series can only be 



supplied at the prices indicated. 



48 Preparations to illustrate the Histology oi 



the Rabbit, £i is. net. 



The Type Slides at the prices indicated. 



16 Preparations to illustrate the Histology of the 

 Freshwater Mussel, 12s. net. 



Single Slides, lod. 



11 Preparations to illustrate the Histology of the 



Freshwater Crayfish, Ss. 3d. net. 



Single Slides, lod. 



20,000 Microseopical Slides in Stock. 



6,000 LANTERN SLIDES FOR SESSION 

 1901-02. 



Slides to illustrate the Animal Kingdom ... 3,000 



„ ,, Vegetable Kingdom ... 2,000 



,, ,, Geology, Astronomy, &c. ... S13 



,, ,, the Textile Industry... ... 250 



New Microscopical List and Supplement to Lantern 

 Slide List now Ready. 



ABRAHAM FLATTERS, 



Gold Medallist in Microscopy and Photo-Micrography, 



16 & 18 Church Road, Longsight, 

 MANCHESTER. 



Preparer of Textile Fibres and Demonstrator in Microscopy to the 

 Manchester Municipal Technical School. 



Send for Lists, free per post. 



