Im Original: „a programme of at least 8 years work for himself, his brother & a staff of assistants, & which will require a much greater outlay than the E.I. Company will probably be prepared to allow, both for instruments & travelling schemes.“ Joseph Hooker an Edward Sabine, unbekanntes Datum, aber vor dem 24. Mai 1854, National Archives, (Kew), BJ 3/ 53.