Copy letter, from Sir John Herschel to Thomas Makdougall Brisbane, 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. A strong letter on behalf of the provision of financial support for Professor [James David] Forbes, along with John Frederick William Herschel's personal statement of belief in the need to free distinguished scientists from teaching duties. 2 January 1842