134 THE PROBLEM OF EVOLUTION 



words : ' I think that we shall do well to discuss 

 in writing the points on which we differ. 1 



6 1 should like to insist upon only one more point 

 viz. that our arguments, or rather the differences 

 that exist between us, are not personal. We may 

 be friends, although we may stand in strenuous 

 opposition to one another. One bond unites us all, 

 one quest inspires us all, there is one aim common 

 to us all, we are all in search of truth ! ' 



IV. DR. FRIEDENTHAL'S SPEECH. 2 



' The scientist Wasmann in his last lecture, on 

 the application to man of the theory of Descent, 

 criticised my scientific work in a manner that calls 

 for a short reply on my part. 



'In a passage which he quoted, 3 and from which 



1 I should be glad to fall in with this proposal, especially as the closing 

 portion of Dahl's speech has convinced me that we may reasonably hope 

 for increased mutual understanding. The conciliatory tone which dis- 

 tinguishes this speech made itself felt also in his work, published in 1886> 

 on The Necessity of Religion: an Ultimate Result of Darwin's Teaching. 

 Although I cannot agree with most of the opinions expressed in this work, 

 I feel bound to recognise the author's good intention. 



2 If the reader will kindly compare the remarks in my third lecture on 

 the subject of Friedenthal's research work on blood, he will be better able 

 to appreciate the agreement between this speech and my statements. 



3 The quotation was made on Rossle's authority ; cf. the Biologisches 

 Zentralblatt for 1905, No. 12, p. 422 : 'At the Anthropological Congress 

 at Greifswald in 1904, Uhlenhuth reported having observed a positive 

 reaction on the part of human antiserum with the blood of pithecoid apes. 

 Friedenthal, too, mentioned having quite recently obtained a positive 

 result with the blood of lemuroida.' 



