530 CONCLUSION. [1881. 



retrospect added to the manuscript of his 'Autobiography' 

 in 1879 : — 



"As for myself, I believe that I have acted rightly in 

 steadily following, and devoting my life to Science. I feel no 

 remorse from having committed any great sin, but have often 

 and often regretted that I have not done more direct good to 

 my fellow creatures." 



