JAMES SWIFT & SON, 



Manufacturers of Optical and Scientific Instruments, 



Contractors to all Scientific Departments of H.M. Home 

 dnd Colonial and many Foreign Governments. 



Crands Prix, Diplomas of Honour, and Gold 

 "dais at London, Paris, Brussels, etc. 



MICROSCOPES 



AND OTHER 

 INSTRUMENTS FOR 



ALL BRANCHES OF 



GEOLOGY, 

 MINERALOGY, 

 PETROLOGY. 



Sole Makers of the 



"DICK" MINERALOCICAL 



MICROSCOPES. 



Dr. A. HUTCHINSON'S 



UNIVERSAL CONIOMETER. 



University Optical Works, 



81 TOTTENHAM COURT ROAD, 



LONDON, W. 1. 



Watson's Microscopes for 

 GeoSogy. 



WATSON & SONS 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 Ceologry supplied. 



WATSON'S Microscopes are guaranteed 



for 5 j'ears, but last a lifetime, and they 



are all 



BRITISH MADE at BARNET, HERTS. 



W. WATSON & SONS, Ltd. (es tablished 18 37), 



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



Works;— HIGH BARNET, HERTS. 



