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R. & J. BECK, 



Manufacturing Opticians, 



•^v 68, CORNHILL, LONDON, E.C. 



FACTORY: 

 LISTER WORKS, HOLLOWAY. 



New Double-Diaphragm & Iris- 



Diaphragm Acliromatic Oondensers 



of Wide Angle. 



HIGH-POWER 

 OBJECT GLASSES 



FOR THE BINOCULAR. 



PATHOLOGICAL 

 AND 

 PHYSIOLOGICAL 

 PREPARATIONS 



STAINING FLUIDS, 

 MICROTOMES, 



ALL 

 OTHER REaUISITES 

 FOR MOUNTING 



NEW "PATHOLOGICAL" MICROSCOPE. 



Full Catalogues sent Free on application to 



R. & J. BECK, 68, CORNHILL, LONDON, E.G. 



