JDH sends this letter accompanying some specimens [not present] for his father, William Jackson Hooker. He discusses his monograph of Van Diemen's Land [Tasmania] plants, it is a revision of WJH's papers in the BOTANICAL JOURNAL & CURTIS'S BOTANICAL MAGAZINE[?] & needs the addition of Malvaceous plants from ICONES PLANTARUM & Brown's genus Stenopetalum from De Candolle. It is to be printed in the ANNALS & Mr Taylor will send copies for Sir John Franklin, Captain [James Clark] Ross etc. JDH expects the expedition to leave VDL for the ice in Oct 1840. Discusses the need to revise his description for the ICONES PLANTARUM. JDH's collection may be extensive enough to warrant adding new VDL genera to future volumes of the FLORA BOREALI AMERICANA. JDH is now considered the naturalist to the expedition though his nominal rank is as a medical officer [assistant surgeon].

JDH informs his father, William Jackson Hooker, of the progress of the expedition via Madeira & Tenerife. Describes brief trip ashore at Santa Cruz & character & vegetation of the different islands of Cape Verde: wooded St Antaois, salt plain Sal & volcanic St. Jago. Collected at Porto Praya on St Jago, has wanted to visit the island since reading Christian Smith's account & recommended Lippold go, suggests how other botanists should collect there from a base in St Domingo. Saw the rocks of St Paul from the ship & his ship mates brought him a specimen of seaweed. On the coast are birds such as boobies & noddies. A Grapsus crab that steals their eggs. Considered going across the Atlantic to Pernambuco, Brazil, where JDH could have seen Adamson, Gardner & Louder. Instead they travelled via Trinidad, JDH describes the appearance of the island & the sparse vegetation, all the trees appeared to have been destroyed by the introduction of goats, there was only grass, tufts of Cyperus & a tree fern. Describes the voyage to St Helena, which was slowed down by the inferior sister ship HMS 'Terror'. JDH spent the time working on his plants in Captain Ross' cabin, drawing sea animals; crustacea & mollusca brought up in the towing nets, & taking meteorological readings. At St Helena he gave Harvey's letter to Chief Justice Wilde who has a house on Diana's Peak, the only place Dicksonia arborea grows & he has a new Brazil Araucaria in his garden. Describes the island & vegetation: it is largely barren but there are Scotch firs, a cabbage tree, Furze, 2 Rubus[?], introduced blackberry, native raspberry, a Ruellia, barren mosses, a Scotheimia, ferns & a tree fern. JDH is disappointed with his plant collection but has done all he can, there are sets for WJH, the Admiralty, Ross & Wilmot. JDH is also keeping a journal & sketchbook. McCormick has made a geological collection for Dr Fritton. JDH is reluctant to send specimens to the Royal Society Commission on Botany. Discusses his future career as a botanist & the pros & cons of naval service for a naturalist. The thought that no other botanist will go where he has on the expedition is appealing. Also includes two enclosures: some lengthy descriptions of excursions to: the Curral in Madeira, Tenerife, Porto Praya, St Jago & St Domingo valley in the Cape Verde Islands & some journal extracts dating from Dec 1839 & Feb 1840.

Since he last wrote to his father, William Jackson Hooker, JDH has botanised at St Helena, most notable for cryptogams. JDH learnt about the island flora from Chief Justice Wilde & the Military Chaplain Mr Helps, who assisted Tournaut[?] of Dr Thomson's lab. JDH could not find Beatsonia or Mikania. He collected Commidendrum, Melanodendron & Lachanodes. Other noteworthy collections include Trimiris, Roellas & ferns. JDH dries his plant on HMS 'Erebus' by hanging them outside, some have suffered in extreme weather & the conditions of the tropics. His main collecting tools are a leather portfolio & vasculum. Using a microscope JDH draws marine animals, some of which are luminous; mostly Entomostraceous Crustacea, Pyrosoma & Sertulariae. Blainville's ACTINOLOGIE & Edwards' CRUSTACEA are his references for this work. Approaching the Cape of Good Hope JDH first saw floating seaweeds, a submarine forest with an ecosystem of fish, parasites, corals, shells, crustaceans, molluscs, worms, actinia [anemones] etc. He describes the main seaweed, a Laminaria. JDH & Captain Ross work on the marine specimens whilst McCormick is only interested in ornithology & geology so JDH is effectively the voyage naturalist. JDH describes the excitement of every new landfall. He discusses what he will include in his Antarctic Flora. Next the expedition goes to Crozet, Prince Edward Island, Kerguelen's Land, Islands of St. Paul & Amsterdam, New Zealand, then the ice of Antarctica. The artillery officer, Wilmot, will be staying at the Cape. His brother Augustine Wilmot is a medical student at Edinburgh, his father MP for Warwickshire. The HMS 'Terror's' artillery officer, Mr LeFroy, stayed at St Helena. JDH asks for some natural history books & about joining the Linnean Society. He discusses sending specimens home, all should go to the Admiralty. Suggests WJH could exchange plants with Wilde. JDH has received no letters at Simons Bay, the Cape. He will write to his sisters at Camden House.

JDH explains to his father, William Jackson Hooker, how he forgot to pay for a gun procured in Glasgow. Assures WJH that his family are constantly in his thoughts & that he grieves the death of his brother William [Dawson Hooker]. Explains how he caught rheumatic fever in Madeira staying with Mr Muir. Everyone got prickly heat on entering the tropics but otherwise JDH has been healthy. JDH recounts the expedition's recent progress. He procured plants at Simon's Town, which they left on 6 Apr [1840] heading south via Marion Island & the Crozets. He describes the islands' appearance from the sea, they were unable to land due to stormy weather. Arrived Christmas Harbour, Kerguelen's Land, 12 May. Describes the appearance of these volcanic islands, which match Captain Cook's account, & notes how fierce the winter winds are. Describes his botanical excursions & findings whilst in Kerguelen's Land. McCormick made a geological collection of Quartz crystals, zeolites, coal & fossil wood. Lists the numbers of things he has found from various orders, fungi, musci, Rosaceae etc & particularly notes new genera of Cotrelleae & Umbelliferae. Briefly describes: features of a new Crucifera which they ate, new Ranunculus, Juncus & Amarantheae & a plant that flowers under the ice & belongs to no known natural order. JDH has made drawings of all the phanerogamic plants he found, based on dissections done under the microscope given to him by [James] Dalton. Describes preparing & storing the plants on board ship with Captain Ross. Took 3 weeks to sail 300 miles to Van Diemen's Land [Tasmania], describes how the HMS 'Erebus' weathers storms well. Mentions collecting seaweeds, letters from [George] Bentham & Mr Almond & letters owed to Childres, Boott & Brown. [Ronald Campbell] Gunn has been appointed Governor Sir John Franklin's secretary. JDH hopes to go to Oyster Bay.

JDH writes to his father, William Jackson Hooker, whose last letter told of the death of JDH's brother William Dawson Hooker. JDH's messmate Yule is also bereaved, he describes a walk the two took amongst Eucalyptus trees. It is winter in Van Diemen's Land [Tasmania] but JDH has collected a Splachnum & Mniarum forsteri. Describes his collecting habits on Kerguelen Island, where his focus was Cryptogams & seaweeds. JDH's collections now total 700 plants incl. 350 from Cape [of Good Hope]. Describes his & [Ronald] Gunn's time together in Tasmania & the climate & recent weather. Has ascended Mt Wellington & collected some new species. Plans excursions to New Norfolk, the lakes & Port Arthur with the Governor Sir John Franklin. Went to Richmond via Grasstree Hill & met [Thomas] Gregson & Major De Gillon. Declined a trip to Launceston & Oyster Bay proposed by Lady [Jane] Franklin, Kaye[?] went instead. Cryptogammia JDH has collected in Tasmania incl: Hookeria pennata, many lichens & Andraea. Has some seed vessels of Legumes for Bentham. Mentions Bentham's citation for Erica McKayi in De Candolle [PRODROMUS], Thomas Thomson collecting in Aden, Wallich's son at Hull, meeting Mr Gouldie & Dr Coverdale. JDH wants to look at mosses with local microscopist Valentine, makes some observations on calyptrae & setae in mosses, especially Orthotriceae. Discusses' Gunn's new Dawsonia, lack of payment to Gunn from [John Edward] Gray for animals & value of Gunn's correspondence & collections to contribute to ICONES [PLANTARUM]. Comments on WJH's publications incl. the new JOURNAL OF BOTANY. Lady Franklin has set up a Natural History Society & is planning a botanic garden at Kangaroo Bottom, Mt Wellington, JDH describes the site & wild vegetation. Notes the orchids he has found incl. Corysanthes fimbriata & the touch sensitive Pterostylides labellum. The Phanerogams JDH & Captain Ross collected in Kerguelen Island were mostly ruined in a gale, some incl. the cabbage are recovering.

JDH writes to give his father, William Jackson Hooker, an account of Kerguelen Island. First comments on places they passed on the voyage there. Agulhas bank; rich with marine animals, Macrocystis pyrifera & seas birds incl. Albatross & Cape Pigeon which provided fresh meat. Marion Island; noted for volcanic mountains, penguin colonies, white coral & diverse marine life. The Crozets; found far East of the mapped position. Possession Island; barren of all but grass & moss. May 6th reached Bligh's Cap. After days of delay due to bad weather landed at Christmas Harbour, Kerguelen Island, on 12th. Describes the harbour, terraced mountains, rocky landscape & persistently violent seas, with reference to account by Captain Cook. Describes the Kerguelen Island vegetation. First plants encountered are seaweed & lichens on the rocks, then a long grass Agrostis species, a Ranunculus & a Compositae abundant in bogs & covered with Callitriche & Portulaceaous plants. Gives detailed description of the Kerguelen cabbage incl. its taste & medicinal properties i.e. preventing scurvy & heart burn. Also describes an unmbelliferous plant that can cover many acres & is the only plant that does not seem to be endemic to Kerguelen. Also notes: Acaena, a Silene of elusive classification, a Poa grass, a marsh Aira & a Juncus that grows near lakes. Describes the characteristics & habitat of a plant that flowers under the frozen lakes, it may be of a new natural order though it has some features of Scrophulariaceae, Lentibulariaceae & Primulaceae. Makes some observations on the winter climate. Notes that there is 1 aquatic plant & 1 dry land plant, most vegetation grows in between in moist peaty areas. The mosses & Jungermannia were alpine & arctic forms. Describes the proliferation of lichens in different areas, though there are no large trees so no parasitical lichens. Describes prolific seaweeds esp. pyrifera & Laminaria radiata which protect limpet colonies. The only fungi is a Peziza.

JDH thanks his father, William Jackson Hooker, for the constructive criticism of his collections, the first he has made in a new country. The collections JDH is leaving for [Ronald Campbell] Gunn to send home are better. Since arriving in Hobart Town [Tasmania, Australia] JDH has only worked on botany, collecting the spring plants in locales advised by Gunn & shunning society with the exception of attending Government house when necessary & a ball given for the ships' officers. Explains why it is impossible for him to collect in the Western tier during the current season. Notes that flora in the centre of the island is less advanced; Acacia mollissima only just in bud in the interior. Describes a collecting excursion to Lake Echo, en route JDH stayed in a stock keeper's hut in Marlborough. Describes the interior of Van Diemen's Land [Tasmania] as a table land of marshes covered in dead Eucalyptus timber - all the trees were killed in the 1837 frost along with the undergrowth of Leptosperma, Bedfordia & Fagus cunninghamii. All nature suffered that year, hundreds of kangaroos died. The forest only survives on the highest hills, where JDH gathered the 'Cyder tree' Eucalyptus, but it was the wrong season to tap for its fluid. On return trip JDH travelled via Hamilton & the estate of the clergyman Mr Naylor at Cheny[?] on the River Derwent. By the river are: Phebalium retusum, Pleurandras, Eurybius & many flowering shrubs. The cataracts [gorge] is densely wooded & full of bush kangaroo & plants new to JDH: a beautiful Gleichenia, Sprengelia, some Eucalypti & Acacia. Briefly discusses novel species he has found amongst the gum trees & the Crucifera & Cryptandra of Van Diemen's Land. Mentions a feature of the labella of Pterostlides [Pterostyllis] orchids. Is still working on his sketches of Kerguelen's Land plants.

JDH informs his father, William Jackson Hooker, that the expedition is leaving Van Diemen's Land [Tasmania]. Discusses his collections going to Brown. JDH has more specimens from Kerguelen Island & Tasmania, some will go to WJH privately through [Ronald] Gunn, with whom he has shared collections. JDH hopes that Thomas Spring Rice, Baron Monteagle, gets WJH the Directorship of RBG Kew. Thanks WJH for sending news of his friends & discusses Fitch, Gardner, Harvey & Arnott. Mentions mosquitoes. Cummings made better St Helena collections than JDH. Discusses his family's health. Has written to Brown, who once lived at Risdon, where JDH found new Eucalyptus, Cryptandra & Cruciferous plants. Wants WJH to ask Brown about the Xanthorrhoea covered 'grass tree hill'. Describes Thomas Gregson & his son John Gregson. Discusses Sir John & Lady Franklin whom he accompanied to Port Arthur, where he collected specimens incl. Anopterus glandulosus on a Sunday. Captain Ross strictly enforces the Sabbath. JDH shares specimens with Captain Crozier & Miss Cracroft. JDH has also collected fossil woods & made sketches. Discusses his botanical books. Describes Jorgen Jorgensen's state as a drunkard. Discusses Lady Franklin's terms for employing a gardener. The expedition will now go to Campbell's Island, where JDH hopes to collect seaweed, then south to follow the coast of Antarctica. Whilst at sea JDH will draw specimens preserved in spirit. JDH thinks he has got better at collecting, though it has been a bad season for plants in Tasmania. Recounts Captain Biscoe's account of Campbell Island. Describes the difficulty of transporting plants in Wardian Cases incl. the Kerguelen Cabbage which Captain Forman of the 51st Regiment at Hobarton is also growing from seed. Fruits & livestock will be taken to Campbell's Island. Mentions the attribution of Wardia. JDH hopes Thomas Thomson will collect in China or Persia. Discusses his finances & recommends investing money in Tasmania.