Manchester IMenioirs, Vol. Ivii. (1913), A^c?. 



19. 



23 



early history of Sir Humphry, who worked his way from 

 a surgeon's assistant to the foremost place in English 

 science— the presidency of the Royal Society. 



An interesting drawing, which represents Davy's most 

 important technical discovery, namely, his safety-lamp, is 

 reproduced here. [Text-fig. 3.) 



Ia?7yoey ^ Ju^lZET' 



fi^ 



^ ^^OAry 





9. 



^^O^ 





Text-fig. 3. 

 The drawing is taken from a contemporary letter of 

 Andrew Ure,^" in which he sent a description of the lamp 

 to France. All the documents belonging to the history 

 of this invention are noteworthy on account of the keen 

 struggle which once existed between the followers of Davy 

 and those of George Stephenson, who maintained that a 



^^ Andrew Ure (1778-1S57), chemist. Author of the well-known 

 "Dictionary of Arts, Manufactures and Mines." 



