70 PASTEUR 



the one who had formerly caused Pasteur such 

 keen emotion by his lectures on chemistry at 

 the Sorbonne, who presented him to the Em- 

 peror at the Tuileries in March, 1863. 



Pasteur delighted Napoleon III by his seri- 

 ous and simple manner. He explained his ideas 

 regarding the scientific problems on which he 

 was engaged, and confessed to the Emperor 

 that his most secret ambition was to study con- 

 tagious diseases in order to find a cure for all 

 humanity. 



