London, 18, Picket-Street, Strand, 1834. 



Prices of the Optical Instruments described in the 

 '* Microscopic Illustrations'' and the '- 31icro- 

 scopic Cabinet.'* 



£ s. d. 

 Pritchard's Pocket Microscopes 3 four powers, with 



rack adjustment^ in case (see "Cabinet," p. 242), 1 18 O 



Condenser, compound body, extra powers, and micro- 

 meters, added at pleasure. 



Pritchard's New Vertical Single, or Doublet Micro- 

 scopes 5 5 



Ditto, with compound body, extra I 1 



Pritchard's Jewel and Doublet Microscopes, with 

 tripod stand — Wollaston's Illuminator, &c. (see 

 '' Cabinet," p. 124) 10 O 



*Pritchard's Achromatic Engiscopes, with solid tripod 



stand ; (see Plate) 15 15 O 



Ditto, best mounting, and extra deep objectives, in 



Cabinets, with drawers 25 O 



Ditto, with best moveable stage and apparatus, in 



Cabinets, from .£35 to 45 



Goring's Operative Aplanatic Engiscopes, from 



£25 to 50 O O 



Improved Amician Reflecting Engiscopes, from 



£\H O to 35 O 



Achromatic Object-Glasses, of different foci and 



apertures, mounted to any microscope, from 3 



* This excellent substantial Instrument may be had lilted with best 

 Doublet or Single Magnifiers, price oif 10 IO5. 



