R. & J. BECK'S 
LATEST MICROSCOPE. 
No. 31. LARGE CONTINENTAL MODEL with PERFECT FINE ADJUST- 
MENT, and RACK AND PINION (CENTERING) SUBSTAGE. 
SPECIALLY ADAPTED FOR BACTERIOLOGY & HIGH-POWER WORK. 
MICROTOMES 
CABINETS 
LAMPS 
IMMERSION 
OBJECT 
GLASS 
; i ■■ '' _ 
THE INSTRUMENT 
AS FIGURED, WITH 
TWO EYE-PIECES, 
2/3 IN. AND 1/6 IN. 
OBJECT-GLASSES, 
ABBE CONDENSER 
WITH IRIS 
DIAPHRAGM, 
PACKED IN 
POLISHED 
MAHOGANY 
CASE, 
£11 10 0 
FULLY 
ILLUSTRATED 
CATALOGUE 
FREE ON 
APPLICATION. 
R. & J. BECK, 68 Cornhill, London, E.C. 
FACTORY; LISTER WORKS KENTISH TOWN, N.W. 
