Though correspondence has never ebbed so low, CD is constantly in his thoughts.

Observations on cheetahs used as domesticated hunting animals.

Finds geographical barriers sometimes separate species, but also finds species that remain separate where there are no barriers to migration.

Colour "individuates" isolated animal species.

Plains and alpine animal distribution show altitude not strictly analogous to latitude.

Impact of timber cutting on climate has led to extinction of crocodiles.

Will discuss coal formation in letter to Edward Forbes.

CD often asked whether isolated mountains in southern latitudes had closely allied representatives of Arctic and north temperate plants; JDH has found a representative barberry.

Making for Darjeeling via Calcutta.

Brian Hodgson reading CD’s Journal of researches with delight.

Forwarding breeding pamphlets.

JDH recommends P. S. Pallas on degeneration.

CD’s facts on sex in barnacles startling.

Hugh Falconer’s health.

Hugh Falconer’s misbehaviour.

Waiting out rains at Brian Hodgson’s.

Will make botanical transverse section of Himalayas from plains to snow.

Arrangements to pass Sikkim Rajah’s territory.

No evidence of glacial or diluvial action in sub-Himalayan mountains. No evidence of detrital coal formation.

Hodgson’s replies to CD on introduced species and hybrids.

Thanks WJH for information on J. D. Hooker’s progress.

J. D. Hooker promised a copy of his Galapagos paper. Can WJH forward one to the Athenaeum?

Physical description of Sikkim mountains.

Travelling through Kinchin snows.

Transported boulders.

Continues prior letter of this date. Has received CD’s [1202]. Thanks CD for saving his correspondence.

Sent "a yarn about species" in October mail.

Some "puerile" JDH letters printed in Athenæum.

Requests CD extract anything valuable from his letters to CD and Lyell for Athenæum.

CD’s complemental males in barnacles wonderful.

Warns CD to drop his battle about perpetuity of names in species descriptions.

Pleasure at receiving CD’s scientific letters to JDH and Hodgson.

The H. Wedgwoods’ pecuniary loss.

Condolences at CD’s father’s death.

Rajah harasses JDH’s work. Lack of supplies, rain, malarial valleys, and landslips make going difficult. Cannot get into Tibet.

"Twenty species [of plants] here [Camp Sikkim] to one there [Tierra del Fuego?] always are asking me the vexed question, ""where do we come from?""."

From observation of terraces descending to steppes and plains of India, he thinks that the Himalayas were once a grand fiord coast.

Has information CD requested on Yangsma valley. JDH’s detailed hypothesis of origin of dam there. Does not agree with CD’s interpretation.

CD partly right. JDH was calling "stratification" what CD calls "foliation". Answers CD’s question on cleavage foliation in Himalayas. Glacial action.

Charmed by CD’s Admiralty instructions on geology [in Manual of scientific enquiry (1849), Collected papers 1: 227–50], but complains he does not give prices of books and instruments he recommends.

Asks WJH to thank his son [J. D. Hooker, away on Antarctic survey] for his note. Has also read a letter JDH wrote to Lyell. Hopes JDH will publish a journal. If he publishes an Antarctic flora, CD will place his collection of South American alpine plants at his disposal.

CD sends seeds found by W. Kemp of Galashiels with explanation and request that they be planted and a report sent to him, so that Kemp may publish his discovery if results are interesting.

Apologises that the house is full this weekend, but next weekend would be good.

Will be pleased to provide a testimonial for J. D. Hooker, who is seeking the Chair in Botany at Edinburgh, but fears he himself is so little known that it could only be of the smallest service. Has asked Lyell to write to J. F. W. Herschel giving an opinion of J. D. Hooker.

A letter in support of J. D. Hooker as a candidate for Edinburgh Chair in Botany. No one better qualified. Wishes him success.

CD sends a copy [of South America] to Gardeners’ Chronicle and refers to a passage on Patagonian salt; asks for backing and specific information supplementing his suggestion that an added chloride would increase the salt’s preserving power.

No summary available.

JDH writes from Lisbon regarding his journey, letter sent with one to Miss Henslow. Anticipates good passage as far as Sidon but plans after reaching Egypt are uncertain, he will stay close to G.G. [Governor General]. Discusses how grandfather has invested JDH's money & how to draw money from W. & T.[?] after arrival in Calcutta [Kolkata]. Letter arrived at Portsmouth containing letters of introduction for JDH in Calcutta. Suggests Miss Cracroft would be liked by his family & should visit Kew & wants to know what friends of hers he should visit in India. Mother to forward this information through Mrs Kendal. Reports on progress with V.D.L. [van Diemen's Land] plants to be sent home by Dr Salmon, not Miller, along with the with the Niger m/s [manuscript]. Provisionally calls the new V.D.L. cruciferous plant Bretonia. This & the Fagus called ‘gunnii’ from the m/s of Gunn’s trip should be checked by Pl[anchon?] to see if names are occupied & characters drawn up. Dr Richardson to be informed what ship the plants are sent on so he can send case of bottles by the same via steamer to Barnes. JDH to write again from Gibraltar with account of Lisbon.

JDH hopes to be at Aden tomorrow. On arrival at Alexandria 4 Dec Ld Dalhousie insisted he belong to his suite in future. Left Alexandria on Sunday for Cairo. Travelled with Captain Henderson & officers using Transit Offices steamer along the Makmoudea [Mahmoudieh] Canal, discusses the canals construction & death of many Egyptians. Describes landscape, mentions Tamarix, Dates, Acacias, Cyprus & Myrtle. Switched to a pleasure packet steamer placed at their disposal by Mehmet Ali [Muhammad Ali]. Describes luxurious fittings in the part for Lord & Lady Dalhousie. The rest of them: including the Prime minister of Egypt, messed on deck in little cabins with simple facilities. Describes the Nile as about as broad as the Thames at Kew, mentions reading Bruce's and Salt's travels in the past. River banks are cliffs of mud showing successive layers of deposited soil to which Egypt owes its scanty vegetation. Saw lonely Arabs, Dromedary, tents, & donkeys. Beyond river banks wide spread uninhabited sand deserts. Irrigation attempted here & there, houses rare & always built near trees. Numerous boats such as figured in Bruce's journey. Describes first glimpse of the Pyramids & Cairo. Few miles before the town are Mehmet Ali's country gardens and Palaces of Shoobra [Shubra]. Thinks the Leicester Square Panorama gives an admirable idea of Cairo's location. During Cairo stay visited Ali Pasha's Rhoda Gardens but on the whole disappointed & outlines the difficulties of an exotic garden in Egypt. Mr Traill received him very cordially & showed him the gardens which JDH briefly describes. Letter continues Aden 19 Dec. Describes Aden as wonderful, bleak & barren. Dr M[?] has gone to Bombay for good & is now at Scinde [Sindh]. The bulbs JDH would have are not above ground & everything but Capparis, & a few other things are burnt up. He has sent Lord Auckland's parcel of seed onto Bombay [Mumbai].

JDH describes his journey toward Ceylon [Sri Lanka] via Egypt, Suez, Red Sea & Aden. Writes of his time Cairo & the agriculture, vegetation & landscape of the region, the only trees are date palms, Acacia lebbek & Sycamore figs. Enumerates species seen on visit to Rhoda Gardens with Mr Traill, discusses problems of having this garden on an island in the Nile & recommends WJH read Traill's account in GARDENERS' CHRONICLE. Also writes observations of: visit to Fojal Forest with officers of the Sidon; the Pyramids; Cairo Pass tombs visited with the Governor General; fossil forest in the limestone desert; vegetation outside Cairo, mainly Capparideae, Zygophyylleae, Rutaceae & Hyoscyamus; dining with the with Consul General, a brother of Capt. Murray RN. Describes transit from Aleaxandria to Suez at the Pasha agents' expense. Ld & Lady D travelled by Barouche, vans transported Dr Bell, Jane, Courtenay, Capt. Henderson & various servants on roads the Arabs are bribed to maintain, Colocynth [Citrullus colocynthis] the only plant. Describes views of Red Sea & Sinai & the sterile landscape around Suez. At Suez met Col Heaney & son, Matilda Rigby & husband. Sailed down Red Sea in the 'Moozuffer' under Captain Ethersley. Sargassum prevalent at about latitude 20, describes islands passed. Boatswain killed. Saw conferovid plant described by Montagne in the ANNALES TRICHOSEMINA RYTHREENA. Passed Mocha & Strait of Babel Mandeb before arriving at Aden. Discusses wind phenomena & saltiness of Red Sea. Describes Aden volcano as resembling St Helena but even more barren than Green Mt in Ascension. Shore wooded with Acacias, Dates, and Mangroves. G.G. wants reports on tea districts of India. Assam did not enter into JDH's calculations. Also includes a printed black and white illustration entitled: ADEN "THE GIBRALTAR OF THE RED SEA".

No summary available.

No summary available.