HEROES 



OP 



INVENTION AND DISCOVERY; 



UVES OF EMINENT INVENTORS AND 

 PIONEERS IN SCIENCE. 



SELECTED BV THE EDITOR OF 



•risen by PERSEVERANCE; OR, LIVES OF SELF-MADE MEN," "tHR 

 ENGLISH ESSAYISTS," " TREASURY OF MODERN BIOGRAPHY,'' ETC 



EDINBURGH: 

 W. P. NIMMO, HAY, & MITCHELL 



