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PREFACE. 



THOSE who read the following life will, I believe, 

 not think that any serious apology is needed for its 

 having been written. The subject of it has endeared 

 himself to a large circle of friends ; his character has 

 proved itself through a long life admirable for sin- 

 cerity and unselfishness ; his career is marked by the 

 successful and, in many respects, surprising conquest 

 of difficulties ; his natural history pursuits have had 

 results of great interest and value., From his own 

 lips and published writings, from a long series 6f 

 manuscript note-books and a great store of corre- 

 spondence, trustworthy materials have been available 

 for the narrative. By many curious changes of fortune 

 and a variety of humorous incidents, the course of 

 the biography is enlivened ; by the attractive details 

 of scientific research as well as by the lessons of the 

 life itself it is made instructive and profitable. 



It is due to no vanity on the part of the hero that 

 this. record of his adventures sees the light. He had 



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