Summary of letters, from Sir John Herschel to Mary Somerville Summaries of letters, made as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Summary of 5 letters from Sir John Frederick William Herschel to Mary Somerville published in the 'Personal recollections of Mary Somerville' March 1873. Letters dated: Undated probably 1827 [Read Somerville's manuscript] 23 February 1830 [Somerville to 'contemplate separate publications'] 17 July 1830 [Arrival to Feldhausen] 18 March 1844 [Not received Somerville's letter in a while] 21 November 1845 [Expresses his 'pleasure'] Each letters is decribed in a few words. 1870s