72 Dr. WHEWELL'S CRITICISM OF ARISTOTLE'S ACCOUNT OF INDUCTION. 



man to have a gall-bladder, but that he also conceived this not to be universally true. He may 

 have inclined to the opinion, that the opposite case was the more usual, and may have written 

 avOpcviros, in the passage which I have been discussing. Another mistake of his is the reckon- 

 ing deer among long-lived animals. 



It appears probable, from the context of the passages (C) and (D), that the conjecture of a 

 connection between absence of the gall-bladder and length of life was suggested by some such 

 notion as this : — that the gall, from its bitterness, is the cause of irritation, mental and bodily, 

 and that irritation is adverse to longevity. The opinion is ascribed to "the ancients," not 

 claimed by Aristotle as his own. 



W. W. 



Trinity Lodge, 

 April 13, 1850. 



