Copy from a draft letter, from Sir John Herschel to John Ryall, dated at Collingwood Copy of a draft letter, copied by various copyists as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. At Ryall's request [see Ryall's 1865-1-7], attests to merits of late George Boole as mathematician, in support of petition for government pension for Boole's widow. 12 January 1865