G. F. CASELLA & GO. 



LTD. 



Makers of Scientific Instruments 

 for all Purposes 



DEEP-SEA 



llTHERMO- 

 ( METERS 



I CURRENT 



METERS 



TIDE 



GAUGES 



MARINE 

 BAROMETERS 



METEOROLOGICAL & SURVEYING INSTRUMENTS 



IW Please write for Catalogues 

 11-16 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. 

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



