Letter, from Roderick Impey Murchison to Sir John Herschel, dated at Petersfield Autograph letter signed by sender. Received John Frederick William Herschel's letter with pleasure; delayed replying as hoping to comment. Theories have been shown to Charles Lyell, William Whewell, etc. Gives his own comments on John Frederick William Herschel's theory. Installed Whewell as President of the Geological Society. Pleased John Frederick William Herschel is to become a subscriber to Roderick Impey Murchison's book, which moves slowly along. Received a collection of fossils from Fernando Po recently. 28 February 1837