JDH describes arrival at Aden, its landscape, history, population & compares it to Gibraltar. They stayed at the west end of the Peninsular where Captain Haines, Indian Navy resides. Saw Somalis employed by Hindus & Arabs as servants, who would dive for 6d pieces much to Lady Dalhousie’s amusement. In the afternoon the 'Precursor' arrived & JDH met Mr & Mrs Smith. Describes striking coastal scenery with little vegetation excepting Capparis, Acacia & Euphorbias. Describes Sunday visit to the cantonment with Haines & Courtenay, travelling by French Barouche & Arab horses. Surveyed fortifications & saw forts, guns, black Sepoy soldiers, vultures & ruined Turkish castles. JDH ascended to a signal station & notes aqueduct leading to the peninsular. At Captain Haines’ residence met by Assistant Political Agent, Lieutenant Cruttenden, contributor to the GEOGRAPHICAL SOCIETY JOURNAL, & Civil Surgeon, Dr Vaughan. Visited the church with wholly military congregation. Also went to the highest part of the island: Shamsun, JDH describes landscape & sprinkled vegetation of about 40 species. Road to ridge very well built & though to have been constructed by captive Jews under Solyman [Suleiman] the magnificent. Towards top of ridge found two plants lately figured by Lindley in the BOTANICAL REGISTER. Discusses vegetation & view. Saw that the 'Precursor' had grounded. Signal station at top of ridge, barren of everything except lichens. Monday collected early morning in a cooler valley & visited the beach. Lists plants, saw fox but no apes. Returned to Captain Haines' & prepared to start for Ceylon where they arrived 31 Dec. On arrival met Gardner who had been awaiting their arrival at Colombo. Matilda Rigby had arrived in Ceylon [Sri Lanka] the previous day. Letter concludes on 6 Jan from Government House where JDH is with G.G. [Governor General?] & from where they sail to Calcutta [Kolkata] on Saturday.