STUDIES ON BEER. 175 



pure as possible. At the Exhibition of Amsterdam 

 there might be seen bottles half full, containing a per- 

 fectly clear beer, which had been tapped from the 

 time of opening of the Exhibition. This was French 

 beer, manufactured according to Pasteur's principles, 

 by a great brewer of Marseilles, M. Velten. The 

 happy effect of these studies is universally recognised. 

 At Copenhagen, M. Jacobsen has had a bust of Pasteur, 

 by Paul Dubois, placed in the salle d'honneur of his 

 celebrated laboratory. 



In terminating his Studies on Beer, Pasteur re- 

 called to mind the principles which for twenty years 

 had directed his labours, the resources and applica- 

 tions of which appeared to him unlimited. ' The 

 etiology of contagious diseases,' he wrote with a scien- 

 tific certainty of conviction, ' is on the eve of having 

 unexpected light shed upon it.' 



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