CH. VIII. SCIENCE OF THE MIDDLE AGES. 59 



1678 J Whewell's 'History of the Inductive Sciences;' Priestley's 

 'History of Vision,' 1772 ; Smith's 'Optics,' 1778; ' Edinburgh En- 

 cyclopaedia,' art. Chemistry; Bacon's 'Opus Majus,' by Dr. Jebb, 

 1733; Bacon, 'Sa Vie, ses Ouvrages, et ses Doctrines,' by M. 

 Charles, 1861 ; Ventura, ' Ouvrages Physico-mathematiques de Leon- 

 ardo da Vinci,' 1797; Draper's 'Conflict between Religion and 

 Science,' 1875. 



