14 HISTOKY 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,'' Fenny Cyclopaedia, by Mr, Ross ; 

 Practical Treatise on the Microscope, by Professor Quekett ; 

 Sir David Brewster's Ti^eatise on the Microscope; Dujardiu's 

 Observateur ; Maudl, Traite pratique du Microscope: Dr 

 Rubin, Du Alicroscope, &c. 



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Fig. i.— Baker's Scmfl or Pockrt Microscope, arid {fie Modern Compound 

 Microscope of W. Ladd's manujacture. 



