u 



HISTORY OF THE MICROSCOPE. 



tRose of all other countries. Messrs. Powell and Lealand'a 

 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'a 

 Obstrvateur ; Maudl, Traitc pratique du Microscope ; Dr 

 Robin, Da Microscope, &c. 





Pig. 5.— Baker's Scroll or PncJo*t Microscope, and the Modern Compound 

 Mijroicope of W. Ladd's maiufaciure. 



