JAMES SWIFT & SON, 



Manufacturers of Optical and Scientific Instruments, 



. . Contractors to all Scientific Departments of H.M. 



Home and Colonial and many Foreign Governments. 



GrandsPrix,Diplomasof Honour, and Go/d Meda/sat London, Paris, Brussels, etc. 



MICROSCOPES 



AND OTHER 



INSTRUMENTS FOR 



ALL BRANCHES OF 



GEOLOGY, 



MINERALOGY, 



PETROLOGY. 



Sole Makers of the 



"DICK" MINERALOCfCAL MICROSCOPES. 



Dr. A. HUTCHINSON'S UNIVERSAL 



GONIOMETER. 



UNIVERSITY OPTICAL WORKS, 

 81 TOTTENHAM COURT ROAD, LONDON, W.I. 



icroscopes 



WATSON & SONS manufacture a 

 special series of Microscopes for Geo- 

 logical work. All have -unique features, 

 and every detail of construction lias 

 been carefully considered with a view 

 to meeting every requirement of the 

 geologist. 



All Apparatus for Geology supplied. 



WATSON'S Microscopes are guaranteed 



for 5 years, but last a lifetime, and they 



are all 



BRITISH MADE at BARNET, HERTS. 



W. WATSON & SONS, Ltd. (ESTABLISHED 1S37) 



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



Works:— HIGH BARNET, HERTS. 



