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.D/p/omasof Honour, and Gold Medalsat 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. 



Watson's Microscopes for 

 Geology. 



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 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 1837), 



313 HIGH HOLBORN, LONDON, W.C. 



Works:— HIGH BARNET, HERTS. 



