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MICROSCOPES AND BALANCES 



AS MADE BT 



W. STONE, 44, GLOUCESTER STREET, HOLBORN 



(Late Maker to an eaiincnt firm), are the best and 

 cheapest. Try his 35s. Box BALANCE, warranted to 

 tnrn to ONE-TWENTIETH OF A GRAIN : or 405. 

 Microscope. Price List of Balances (Illustriited) post free. 



FUNGI, LICHENS, ALG/E, MOSSES, HEPATIC/E, FERNS, &c., 



PREPAKED AS MIOKOSOOPIOAL SLIDES, 



MAY BE OBTAINED AT 2U. PER TWO IX)ZKN OBJECTS. EVERY SLIDE GUARANTEED 

 FREE FKOII LEAKAGE. 



Apply Rev. J. E. VIZE, Forden Vicarage, "WelshpooL 

 SI^ECI^A^IL, ISrOTICE- 



POWELL AND LEALAND'S 



NEW OIL mMERSION CONDENSER 



Can be adapted to any Microscope, rcsolvijs all the most difficult 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 dog. respectively, coarse and fine Adjustment, Glass Stajre and Bull's-eye 

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

 FLUID AND OIL lilMERSION LENSES. 



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



Barclay & Son's Mikrqs ^^Microscope Lamp. 



■g This Lamp Is intended to ptiptrsede the 

 M Microscope Lamps now in use. 



_ We claim for it the advanUigc that, being 



3 ^ famished with a silvered reflector and a 



,3 <0 powerful lens, a greater aiuoutu of light 



^1 gj is obUiined with li*8 means tlun lu any 



o c-j lamp we know of. it barns for 7 hours 



"g "^ without replenishing, at a cost of one- 



M eichth of a penny per hour. No light is 



g wasted, and the iiiat given out Is scarcely 

 appreciable by the MicixiscopiBL 



The Show Jiixmt eintain a large itock of Lamps of every detcription. 



BARCLAY & SON, Wax Chandlers and Lamp Makers 



13 8, 



To ffer Ma jetty and Il.Ii.lI. the I'rince of WaUt, 



COLLIN S' MICROS COPES. 



Fully ILLUSTRATED CATALOGUE of ENSTRUMENTS and APPARATUS, 

 MOUNTING MATERIALS, &c,, Mailed Eree to any part of the World. 

 Ste full-page AdvcrtUement in April Part of this Journal. , 



CHARLES COLLINS, MANUFACTURER, 



ICJT', CJrciit I'oi'tltmtl SSli*ct*t, X^ou<lun, "\V. 



Also, SPECIAL LIST of MiCBooooncAi, BooRa and otueb SoBMTirro Wub&s, witu 



FULL DISCOUNT. 



