C. F. GASELLA & CO. 



LTD. 



Makers of Scientific Instruments 

 j or all Purposes 



DEEP-SEA 

 THERMO- 

 METERS 



| 



liil CURRENT 



METERS 



TIDE 



GAUGES 



MARINE 

 BAROMETERS 



METEOROLOGICAL & SURVEYING INSTRUMENTS 



W^ Please -write for Catalogues 

 11-1S ROCHESTER ROW, LONDON, S.W. 



C. BAKER 



{Established 1765) 



Microscope Manufacturer 

 244, HIGH HOLBORN, LONDON 



Microscopes and Apparatus for Collecting 

 and Examining Marine Life 



DISSECTING MICROSCOPE, with 2 Aplanatic Lenses, x 10 x 15, 

 in Case. £2. 



APLANATIC POCKET LENSES, in Nickel-plated Mounts, 

 x 8 x 10 x 15 or x 20. 12s. 6d. each 



FULL DESCRIPTIVE CATALOGUE POST FREE 



Depot for Zeiss, Leitz, and Reichert Microscopes, etc., Dr, 

 Grubler's Stains and Reagents, and Jung's Microtomes. 



