SCIENCE- G OSSIF. 



A BAUSCH & LOMB'S 



LABORATORY, 

 BACTERIOLOGICAL 



AND 



ADVANCED 



MICROSCOPE. 



MODEL B.B. 



THE POPULAR 



FAVOURITE. 



With Screw Substage, 

 Iris Diaphragm, 

 Coarse and Fine Ad- 

 justment, Brass 

 Stand, in Polished 

 Wood Cabinet, with 

 Lock and Key, 

 £5 0. 



HUYGHENIAN 



EYEPIECES. 



From 2" down to \" , 

 5/- each. 



A. E. Staley & Co., 



35 Aldermanbupy, 

 London, E.C. 



Bausch & Lomb's re- 

 presentatives for Great 

 Britain and Export. 



■PAGE, FULL ILLUSTRATED DESCRIPTIVE 

 LIST, THREE PENCE TO C OVER POSTAGE. 



D^r As an instance of the High-class charactep of ouc 

 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. 



N.B. — See Notes on our Iiistrtnncnts in the New Edition of 

 ''^ Carpente7' ,on the Microscope.'" 



SECOND-HAND 

 MICROSCOPES. 



Leitz Stand la, with Abb6 condenser and Iris dia- 

 phragm in case £8 lOs. 



Watson Circuit-stage Van Heurck in case .. .. £16 16Si 



Powell & Lealand, No. i Stand with Apparatus . . £70 Os. 



,, „ No. 2 „ „ .... £85 Os. 



„ No. 3 „ ,, .... £17 OS. 



Ross-Zentmeyer Monocular with Apparatus . . £40 Os. 



A large number of second-hand objectives of various powers by 

 the most eminent makers. 



Catalogues of New and Second-hand Instru^nents post free to 

 readers of " Science-Gossip." 



c. B iL k: S R , 



2ii HIGH HOIiBORN, LONDON, W.C. 



JAMES SWIFT & SON, Opticians. 



(Seven Gold Medals awarded for Optical exeellenee.) 



£ s. d. 



J in. Apochromatic N.A. i"30 .. .. .. .. 880 



I ,, ,, ,1 i"4° •• •• •• .. 10 lo' o 



i\ ,, ,, _ ,, i'4o 880 



I ,, Pan-Aplanatic ,, I'so .. .. .. .. 400 



rV jj !) 11 " ^'30 •• •■ •• ■ • 400 



t\ >, ,. II .. i'3o 550 



J „ ,, ,, ,, '83 .. .. _.. 200 

 New Pan-Aplanatic Condenser, N.A. I'oo, complete with 



fitting and stops .. .- .. ., .. 3150 

 New Pan-Aplanatic Condenser (oil) N.A. i'4o, complete 



with fitting and stops . ...5100 



Apochromatic Condenser, N.A .'95, complete with fitting 



and stops .. .. .. •■ .. .. .. 650 



/- t,- .-• (N.A. I'oo .. .. .. .. .. 250 



Combmations . -^ 



only " '40 .. .. 400 



' I ,1 o 95 .. .. 4 15 o 



UNIVERSITY OPTICAL WORKS, 



81 TOTTENHAM COURT ROAD, LONDON, W. 



Microscopical and Lafltem Slides 



Illustrative of every department of 



ZOOLOGY, 

 BOTANY, 

 GEOLOGY 



AND 



TEXTILE INDUSTRIES, 



Frona 6s. cloz. 



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 Mieroseopieal Studies 



in Elementary and Advanced Botany, 



comprising 48 Preparations. 



;,^l IS. net. 



Book of Diagrams is. extra. 



The Type Preparations in this Series can only be 



supplied at the prices indicated. 



48 Preparations to illustrate the Histolog-y of 



the Rabbit, ^i IS. net. 

 The Type Slides at the prices indicated. 



16 Preparations to illustrate the Histolog-y of the 

 Freshwater Mussel, 14s. net. 



Single Slides, is. 



11 Preparations to illustrate the Histology of the 

 Freshwater Crayfish, los. net. 



Single Slides, is. 



20,000 Microscopical Slides in Stock. 



6,000 LANTERN SLIDES FOR SESSION 

 1901-02. 



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

 )) ,, Vegetable Kingdom ... 2,000 

 >j ,, Geology, Astronomy, &c. ... 813 

 ), ,, the Textile Industry 250 



New Microscopical List and Supplement to Lantern 

 Slide List now Ready. 



FLATTERS & GARNETT, LTD., 



48 DEANSQATE, MANCHESTER. 



Laboratories: 16 & IS Church Road, Longrsig^ht. 



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