Watson's Microscopes 



for RESEARCH, STUDENTS' 

 and LABORATORY USE. 



INCOMPARABLY THE BEST, AND ALL BRITISH 



WATSON'S 



H" Edinburgh Student's Model 



Has no equal for Bacteriology. 



It combines all the mechanical move- 

 ments that enable rapid, accurate and 

 comfortable working to be done, including 

 mechanical movements to stage, and a 

 rackwork substage with centring screws 

 an essential for the dark ground examina- 

 tion of Spirochsete. 



Watson's * Service" Model. 



The Ideal Student's Microscope. 



Interchangeable parts. 



New and important improvements in design. 



No cramped working. 



Every fitting of best construction. 



Unequalled quality for price. 



WATSON'S New Objectives : Apochromatic & Parachromatic 



Photo-Micrographic Apparatus. 



All the above are described in Watson's complete Catalogue ul 

 Microscopes, sent post free on application to 



W. WATSON & SONS LTD. 



313, HIGH HOLBORN, LONDON, W.C. 1. 



Established 1837. 



Works : High Barnet. 



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