THE 



LIFE AND LETTERS 



OF 



CHARLES DARWIN, 



INCLUDING 



AN AUTOBIOGRAPHICAL CHAPTER. 



EDITED BY HIS SON, 



FRANCIS DARWIN. 



IN THREE VOLUMES: VOL. Ill, 



THIRD EDITION. 



LONDON: 

 JOHN MURRAY, ALBEMARLE STREET. 



1887. 



All Rights Reserved. 



