ADVERTISEMENTS. 



Successful Photo-Mlcrographu 



is rarely achieved with makeshifts. The beautiful work accom- 

 plished by so many workers has invariably been done with carefully 

 chosen instruments and accessories. Not necessarily the most 

 expensive, but in every instance reliable and suitable. 



We make a speciality of giving advice to customers freely, to 

 enable them to do the best work with the simplest means. 



To begin with, you must have a 

 Watson IVlicr-osoope. 



It will give you satisfaction, plea- 

 sure, and is always reliable. You 

 can have a Microscope at small 

 cost such as the 



tt 



F" EDINBURGH 

 STUDENT'S MODEL, 



here illustrated, and subsequently, 

 when work demands it, add a 

 Compound Substage and Mechani- 

 cal Stage, or if you wish to have 

 an instrument that is completely 

 fitted with every mechanical con- 

 venience there is no equal to 



Watson's Van Heurck Microscope 



11 F " Edinburgh Student's Microscope. and 



Price SB T 6. Watson's Royal Microscope. 



For Objectives Watson's Parachromatic Series com- 

 prises Lenses that are of exquisite performance, both visually and 

 photographically, while the Holoscopic Series has a reputation that 

 guarantees their superlative effects. 



Condensers for Substage. Condenser Systems and Bull's- 



Goim eras Horizontal and Vertical 



II lumina.nt Electric, Oxy -hydrogen, and Oil. 

 All the above and everything connected with the Microscope and 

 Photo -Micrography will be found in Watson's Catalogue of Micro- 

 scopes (No. 2), and List of Photo -Micrographic Apparatus (No. 2o), 

 forwarded post free on application. 



Watson's Microscopes, etc., may be purchased by Progressive Payments. 



W. WATSON & SONS, LTD., 



Opticians to H.M. Government, 



Established 1837. 313, High Holborn, LONDON, W.C. 



Branch and Depots : 



16, FORREST ROAD, EDINBURGH. 2, EASY ROW, BIRMINGHAM. 

 78, SWANSTON STREET, MELBOURNE, AUSTRALIA. 



