Copy letter, from Sir John Herschel to William Whewell, dated at Collingwood Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Asks William Whewell to write letters of introduction for [James] Innes, an educator from the Cape. Comments on William Whewell's Philosophy of the Inductive Sciences, expressing reservations about its a prioristic approach. 6 August 1840