226 MISCELLANEA (continued). [1881. 



took the necessary arrangements. To him my father wrote 

 (February 16, 1877) : 



" I hope that you will inform the one hundred and fifty-four 

 men of science, including some of the most highly honoured 

 names in the world, how grateful I am for their kindness and 

 generous sympathy in having sent me their photographs on 

 my birthday." 



To Professor Haeckel he wrote (February 1 6, 1877) : 



" The album has just arrived quite safe. It is most superb.* 

 It is by far the greatest honour which I have ever received, 

 and my satisfaction has been greatly enhanced, by your most 

 kind letter of February 9. ... I thank you all from my 

 heart. I have written by this post to Herr Rade, and I hope 

 he will somehow manage to thank all my generous friends." 



To Professor A. van Bemmelen he wrote, on receiving a 

 similar present from a number of distinguished men and 

 lovers of Natural Histoiy in the Netherlands : 



" SIR, I received yesterday the magnificent present of the 

 album, together with your letter. I hope that you will 

 endeavour to find some means to express to the two hundred 

 and seventeen distinguished observers and lovers of natural 

 science, who have sent me their photographs, my gratitude 

 for their extreme kindness. I feel deeply gratified by this 

 gift, and I do not think that any testimonial more honourable 

 to me could have been imagined. I am well aware that my 

 books could never have been written, and would not have 

 made any impression on the public mind, had not an immense 

 amount of material been collected by a long series of admir- 

 able observers ; and it is to them that honour is chiefly due. 

 I suppose that every worker at science occasionally feels 

 depressed, and doubts whether what he has published has 

 been worth the labour which it has cost him, but for the few 



* The album is magnificently of an artist, Herr A. Fitger of 

 bound and decorated with a beauti- . Bremen, who also contributed the 

 fully illuminated titlepage, the work dedicatory poem. 



