METHOD OF DISCUSSION AND CONTRADICTIONS. 263 



Lceffler, published in Berlin, in the report of the 

 German Sanitary Office, a kind of scientific tirade 

 against the discovery of virus vaccine, and the possi- 

 bility of utilising it in the large operations of cattle- 

 breeding. 



At the London Congress Dr. Koch had said to 

 a French physician that the possibility of attenuating 

 virus was a thing too good to be true. The whole 

 question was therefore reopened by Dr. Koch and his 

 disciples. At first Pasteur let the torrent flow ; but, 

 not being the man to give way before an adversary, 

 he at last declared that the attacks of the German 

 savants must be repelled at Berlin itself. Continual 

 applications for splenic vaccine were made to him from 

 different parts of Germany. M. Pasteur replied that, 

 seeing that the discovery was so formally contested in 

 Prussia, it would be well, before sending any vaccine 

 abroad, to institute a great demonstrative experiment, 

 as had been done at Pouilly-le-Fort. 



Dr. Eoloff, head of the Veterinary School of Berlin, 

 hastened to take the initiative, by an application to 

 the German Minister of Agriculture. The minister at 

 once nominated a Commission to follow the experi- 

 ments in vaccination and to draw up a report for the 

 German Government. M. Pasteur entrusted the 

 conduct of the vaccinations to his new colleague, Louis 

 Thuillier, who accepted with deep and silent joy the 

 management of an experiment that was to test a 



