( 13 ) 



C. BAKER, 244 & 245, High Holborn, 



Begs to call the attention of Microscopists to his NEW MODEL STAND, to 



which any Apparatus or Object-Glasses can be supplied, price £3. 



Sdpeeiok English oe German Object-Glasses for same, from 21s. 



C. BAKER being tlie appointed AGENT for ZEISS, SEIBERT, HAET- 

 NACH, and other first-class GERMAN MAKERS, is now supplying 

 their beautiful productions at very LOW PRICES. Zeiss' new Homo- 

 geneous and other Immersion Objectives now in Stock. 



A LARGE ASSORTMENT OF 



SECOND-HAND MICROSCOPES AND OTHER SCIENTIFIC INSTRUMENTS 



m STOCK, AT THE LOWEST PRICES. LISTS OP SAME FORWARDED ON APPLICATION. 



Instruments taken in Exchange. Established in 1765. 

 OP 



MICROSCOPES, MICROSCOPIC OB JECT - GLASSES, 

 ACCESSORIES, and MICRO -PREPARATIONS, 



Manufactured by JAMES PAEKES & SON, Patentees, 5 & 6, St. Mary's Eow, Biimingliam. 

 POST FEEE, ONE SHILLING. 



S:PECI.A.L 3^TOTIOE. 



POWELL AND LEALAND'S 



NEW OIL IMMERSION CONDENSER 



Can be adapted to any Microscope, resolves all the most difflcult test objects, price 



Two Guineas. 



MICROSCOPES from £11 lis. to £200. 



The £11 11«. Instrument consists of 1-inch and J-inch Object-glasses, with Apertures 

 of 30 and 95 deg. respectively, coarse and fine Adjustment, Glass Stage and Bull's-eye 

 Condenser, fitted in mahogany case, and is most suitable for Students, Brewers, &c. 

 WATER AND OIL IMMERSION LENSES. 



Manufactory: 170, ETJSTON ROAD, LONDON, N.W. 



HISTOLOGICAL MICROSCOPE, 



"With. 1-incli and J-inch Objectives of splendid Dejanition, 

 Eye-piece, and Case, £5 10s. 



Full particulars free per post. 



Harley Binocular Microscopes, Dissecting Mcroscopes, Lamps, Objectives, Thin Glass 

 Slips, Mediums, and every requisite for the Study. 



THIRTY-SIX PAGE ILLUSTRATED CATALOGUE ON APPLICATION. 



CHARLES COLLINS, 



IST^, Oreat Por-tlaiid Street, London, TV. 



W. P. Collins' Science Book Depot, adjoining the above. Catalogue on application. 



