PREFACE. xxv ii 



on the 1 9th. Yirchow came to Munich only on the 

 2Oth, and delivered his speech on the 22d. 



Bearing in mind the gratitude which I owe to Vir- 

 chow as my former master and friend at "Wurzburg a 

 uratitude which I have at all times striven to prove by 

 the further development of his mechanical theory I 

 shall confine myself, as far as possible, to an objective 

 and special confutation of his assertions. Certainly 

 the temptation on this occasion was a strong one to 

 pay the debt in like kind. In my Munich lecture, 

 among the few names to which I alluded, I particularly 

 mentioned that of Yirchow as the distinguished founder 

 of cellular-pathology (p. I2). 1 Virchow's return for 

 this was to heap scorn and ridicule on the doctrine of 

 evolution in his usual manner. The critic in the 

 Xational-Zeitung," Herr Isidor Kastan, says of this 

 with particular satisfaction, " The ridicule with which 

 Herr Yirchow treated this side of Haeckel's visions was 

 indeed caustic enough, but this is ever Yirchow's way ; 

 only in this case, if in any, he was fully justified." 



I could less easily ignore Yirchow's denunciation of 

 me than his satire a denunciation which gibbeted 

 me as a confederate in the social-democratic cause, and 

 which made the theory of descent answerable for the 

 horrors of the Paris Commune. The opinion is now 

 widely spread that by this intentional connection of 



1 Of the German. 



