102 BIOGRAPHIES OF SCIENTIFIC MEN 



progress of organic chemistry, which he did ; and in the 

 same year, speaking of radicles, he said that " in mineral 

 chemistry the radicles are simple ; in organic chemistry 

 the radicles are compound voila toute la difference." 



Liebig was not content to merely formulate generaliza- 

 tions and leave the details of work to others ; he brought 

 his philosophy down to the level of the average mind ; 

 and by inventing the extractum carnis Liebigis, or 

 Liebig's Extract of Meat, he gave to the world an article 

 of vast importance to the invalid and housewife. 



He received most of the honours that are usually 

 awarded to men of science, such as the Copley medal of 

 the Royal Society, and the associateship of the Academie 

 des Sciences (1'Institut de France). He will ever be re- 

 membered for his work in agricultural chemistry and 

 combustion analysis, both of which are unique in the 

 annals of chemistry. 



Two years after the Franco-Prussian War and the 

 reconstitution of the German Empire, Baron Justus von 

 Liebig died on 18th April 1873, at the age of sixty-nine 

 years, leaving the products of his genius to aid the 

 progress of humanity. 



He was " honoured and respected by every student of 

 science, and loved by each of the band of ardent natures 

 whom he had trained and set forth to battle for the good 

 of their race." As a teacher he was unsurpassed, and a 

 brave array of great thinkers sprang up as if by magic, 



