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. 



Pig. $. Baker' i Scroll or Pocket Microscope, and the Modern Compound 

 Microtcope of W. Ladd't manufacture. 



