Detailing Lyell's concerns and proposed actions, relating to a proposal by Huxley, to work to cancel a note and to add a P.S. [postscript] to the preface of 'Antiquity of Man', relating to Lubbock's challenge. Lyell writes that he has shown the resultant correspondance prior to these letters, to Hooker, Busk and then Darwin:
5 June 1865 Lyell writes in haste - Mary takes over the writing - as he is preparing to leave for 3 months on the Continent.
6 June 1865 Lyell writes again, realising its not so easy to simply cancel the note - and detailing his concerns.