PREFACE 



IT had been hoped that a Life of my Brother, 

 which a distinguished naturalist had undertaken 

 to write, would before now have seen the light, 

 for a competent pen is needed to do justice to 

 the special interests which filled so much of 

 his time and thoughts. But the appearance 

 of this volume having been delayed, the brief 

 memoir which follows has been put together 

 for those who valued my Brother's friendship, 

 and to whom any record will be welcome for 

 his sake. 



C. M. D. 



KENSINGTON : September 1900. 



