262 THE SPREAD OP EVOLUTION. [Ch. XIV. 



the strongest regard. Fritz Miiller is the brother of another 

 distinguished man, the late Hermann Miiller, the author of 

 Die Befruchtung der Blumen (The Fertilisation of Flowers), 

 and of much other valuable work. 



The occasion of writing to Fritz Miiller was the latter's 

 book, Fur Darwin, which was afterwards translated by Mr. 

 Dallas at my father's suggestion, under the title Facta and 

 Arguments for Darwin. 



Shortly afterwards, in 1866, began his connection with 

 Professor Victor Carus, of Leipzig, who undertook the trans- 

 lation of the 4th edition of the Origin. From this time 

 forward Professor Carus continued to translate my father's 

 books into German. The conscientious care with which this 

 work was done was of material service, and I well remember 

 the admiration (mingled with a tinge of vexation at his own 

 shortcomings) with which my father used to receive the lists of 

 oversights, &c, which Professor Carus discovered in the course 

 of translation. The connection was not a mere business one, 

 but was cemented by warm feelings of regard on both sides. 



About this time, too, he came in contact with Professor 

 Ernst Haeckel, whose influence on German science has been so 

 powerful. 



The earliest letter which I have seen from my father to 

 Professor Haeckel, was written in 1865, and from that time 

 forward they corresponded (though not, I think, with any regu- 

 larity) up to the end of my father's life. His friendship with 

 Haeckel was not merely the growth of correspondence, as was 

 the case with some others, for instance, Fritz Miiller. Haeckel 

 paid more than one visit to Down, and these were thoroughly 

 enjoyed by my father. The following letter will serve to show 

 the strong feeling of regard which he entertained for his corre- 

 spondent — a feeling which I have often heard him emphatically 

 express, and which was warmly returned. The book referred 

 to is Haeckel's Generelle Morphologie, published in 1866, a copy 

 of which my father received from the author in January, 1867. 



Dr. E. Krause * has given a good account of Professor 

 Haeckel's services in the cause of Evolution. After speaking 

 of the lukewarm reception which the Origin met with in 

 Germany on its first publication, he goes on to describe the 

 first adherents of the new faith as more or less popular writers, 

 not especially likely to advance its acceptance with the 

 professorial or purely scientific world. And he claims for 

 Haeckel that it was his advocacy of Evolution in his Radio- 



* Charles Darwin und sein Verteltniss zu DeuUchland, 1885. 



