Watson's '"H" Edinburgh 

 bxUDKNT's Microscope. 



British made at Barnet, Herts. 



(IVilh Five Years' Quarantee.) 



WATSON'S 168-page Catalogue is the most comprehensive 

 on Microscopes and their Accessories that is pubhshed 

 Whether you use a WATSON'S MICROSCOPE or not 

 you should read their Catalogue. It will be 

 found invaluable. Post free on request. 



TWO OF WATSON'S 

 TYPICAL MODELS. 



The ««H" Edinburgh Student's 



is well known and appreciated for its many 

 working qualities. It is the best size for 

 amateur's use and is provided with a mechanical 

 stage and compound substage. 

 Prices : 



Stand only as figured £g 12 6 



Stand fitted with 2 Eye-pieces, 

 1-inch and i/6-inch Objectives, Abbe 

 Illumniator, and Mahogany Case £15 



The Van Heurck Model. 



Fact/e princeps for critical high-power re- 

 search and photo-micrography. It combines 

 every mechanical convenience that is necessary. 

 The man who uses his Microscope as a magni- 

 fying toul does not want this, but he who is 

 intent on getting the best out of his lenses will 

 find this instrument a constant sdvatitace 

 Price £18 10s. 



WATSON'S iiicomparable series of Holoscopic 

 Condensers, Objectives, and Eye-pieces. 

 WATSONS new y inch (Semi-apochromatic), 

 with 1 millimetre of working distance, is 

 unequalled for general purposes. Price 30/- 

 WATSONS new 12 'nch (1-30 N.A.) Oil 

 Immersion is a superb lens, £5. 



Watson's Catalogue of MlciH>scopic 

 Objects is the most comprehensive in the 

 world. Every microscopist should obtain one 

 Iree. It contains particulars of Micro-Speci- 

 mens illustrating every brancii of Science, and 

 hundreds of subjects of general interest. 



DO NOT FORGET that WATSONS IGS-page Catalogue of 

 MICROSCOPES is sent Post Free on request. 



313, High Holborn, 

 J London, W.C. 



Watsons Van Heurck Microscope. 



W. WATSON k SONS, LTD. 



