Correspondence of John Frederick William Herschel: volume 27 letters related to specific topics Incoming and outgoing orrespondence relating to the Herschel-Babbage v. South-Davy feud, following Babbage's unsuccessful nomination for the position of the Secretary in the Royal Society: HS/27/1 to HS/27/41 Correspondence relating to Charles Babbage's calculating machine: HS/27/42 to HS/27/54 Correspondence relating to the British Museum: HS/27/55 to HS/27/65 Correspondence relating to the publication of 'Fauna antiqua sivalensis': HS/27/66 to HS/27/73 Miscellaneous correspondence and papers related to the Royal Society: HS/27/74 to HS/27/88 Draft, original letters and copy letters in Herschel's hand Typed index for the volume preceding the letters 1826-1866