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, Diplomas of Honour, and Gold Medals at London, Paris, Brussels, etc. 



MICROSCOPES 



AND OTHER 



INSTRUMENTS FOR 

 ALL BRANCHES OF 



GEOLOGY, 



MINERALOGY, 



PETROLOGY. 



Sole Makers of the 



" DICK " MINERALOGICAL MICROSCOPES. 



Dr. A. HUTCHINSON'S UNIVERSAL 



GONIOMETER. 



UNIVERSITY OPTICAL WORKS, 

 81 TOTTENHAM COURT ROAD, LONDON. 



ieroseopes for 



WATSON & SO^SS manufacture a 

 special series of Microscopes for Geo- 

 logical work. All have unique features, 

 and every detail of construction has 

 been carefully considered with a view 

 to meeting every requirement of the 

 geologist. 



All Apparatus for Ceology 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. (es tablished is st), 

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



Works:— HIGH BARNET, HERTS. 



