MAWSON & SWAN 



Have always on hand an extensive and varied assortment 

 of PHILOSOPHICAL INSTRUMENTS, CHEMICAL APPARATUS, 

 &c.j including 



Pneumatic Apparatus- Air Pumps, Anemometers, &c. 

 Meteorological Instruments Barometers, Thermo- 

 meters, <c. 



Balances Standard Metrical and other Weights and 

 Measures, Hydrometers, &c. 



Microscopes, Microscopic Apparatus, and Objects 

 the Microscope. 



Telescopes, Opera and Field Glasses, Magnifying and 

 Reading Glasses. 



Magic Lanterns, Dissolving View Apparatus, Ma 

 Lantern Slides. 



Mathematical and Drawing Instruments. 

 Pure Chemicals and Re-agents. 

 Photographic Apparatus of every description. 



Complete Sets of Apparatus for General Chemical 

 Analysis, Agricultural Analysis, Alkalimetry, 

 Acidimetry, Chlorimetry, <&c. 



LABORATORIES FITTED UP. ANALYSES PERFORMED. 



MAWSON & SWAN, 



13 & 15, MOSLEY STREET, NEWCASTLE-ON-TYNE. 



