Letter, from John Stuart Mill to Sir John Herschel, dated at India House Autograph letter signed by sender. John Frederick William Herschel's second letter has convinced him. Has now written a new conclusion to the chapter showing the principles of P. S. Laplace in a new light. Does not think Laplace's example is a fair type. Has already rewritten the chapter on the Doctrine of Chances. 8 April 1846