14- HISTORY OF THE MICROSCOPE. 



those of all other countries. Messrs. Powell and Lealand's 

 microscope, with object-glasses, was selected by the Royal 

 Society as the best against all competitors. See Juries' 

 Reports for much interesting matter on this subject; 

 article " Microscope" Penny Cyclopaedia, by Mr. Ross ; 

 Practical Treatise on the Microscope, by Professor Quekett; 

 Sir David Brewster's Treatise on the Microscope; Dujardin's 

 Observateur; Maudl, Traite pratique du Microscope: Dr 

 Robin-, Du Microscope ) &c. 



Fig. 3. Baker's Scroll or Pocket Microscope, and the Modern Compound 

 Microscope of W. Ladd's manufacture. 



