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.

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.

At Madras [Chennai] JDH asked about cheetahs. Conveys observations on their domestication & hunting. Describes hawking practices & birds used. Observes that natural features separate species but this is only one factor, e.g. different antelopes found on either side of River Soane which should not be a barrier to migration. The different types of Indian elephant also an example of races in districts. Discusses kinds of wild & domesticated dogs & cattle. The native Bison is extinct. Sciurus maximus: Peninsular Squirrel, is example of locality-specific colouring. From behaviour of alpine & plain species observes animals are more able to adapt to heat than cold, altitude a factor. JDH wants a specimen of an alligator from Zillah Shahabad. Deforestation changing climate & killing crocodiles. Observes Sand Martins nests colonised by Phalangium spiders & comments on diurnal migration of Neilgherry Ghaats [Nilgiri Ghats] swallows. Plains are alluvial deposits with interesting mineralogy. Will send Forbes a letter re. coal formation. Re. botany, as Darwin is interested in vegetation of isolated mountains, JDH comments on flora of one he climbed incl. barberry. Has found new species of Vallisneria. 4 Mar: JDH left Williams' geological survey to go to Mirzapore, Calcutta [Kolkata] & Darjeeling in Sikkim Himalaya. JDH's address is botanic garden Calcutta, care of Falconer. Recounts passage out to India. Has stayed with Sir L. Peel, Mr Colvile nephew of Lord Auckland, & at Government House. JDH hopes to join the Geographical Survey of Kamaon by naturalists, covering Sewalik hills to Tibet & Simla to Nepal. Thomson is in Yarkand studying geology & botanical geography, Cunningham in Cashmere [Kashmir] & Strachey in Chinese Tibet. Mentions Equus hermionus, an Auroch horn, his health & plan to go to Cherra Poonjee in Sylhet. Mar 8: en route to Bhagulpore down Ganges. Feb 16: will look for cirripedia for Darwin in Borneo, sends regards to Lyells & recommends Griffith's Journals.

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.

JDH delighted by letter from [Charles] Darwin [CD]. [Brian Houghton] Hodgson reading CD’s journal & has some pamphlets on breeds etc for CD from the ASIATIC SOCIETY JOURNAL. Wonders if CD knows of Pallas’ memoir on degeneration of animals. JDH in very good health. [Hugh] Falconer has been unwell but is much better & is trying to get his English time to count towards his length of service. JDH wishes the Darwin’s were all well. Finds CD’s fact about male & female barnacles startling. The Surveyor General [Colonel Waugh] has announced measurements of one of the Himalayan mountains [Kanchenjunga] which make it the highest in the world.

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.

Apologises for being a poor correspondent to [Charles] Darwin [CD] & [Charles] Lyell. At Darjeeling, JDH is staying with [Brian Houghton] Hodgson [BHH]; a Himalayan naturalist. JDH collects beetles. Discusses [Hugh] Falconer's health, work, East India Company pension & bad behaviour; incl. offending the Asiatic Society President, Colvile. For the rainy season JDH has sent out collectors for live plants & is drying them himself. JDH has not been above 10,000 ft but must see that flora to complete a transverse section of the range & its botanical regions. Lord Dalhousie is seeking permission from the Rajah for JDH to go to Sikkim. Permission granted to travel through Nepaul [Nepal] to Tibet passes. In Dec will explore the Terai recording the rocks, plants, climate & zoology. Has formed good idea of the main plants that define the 'central region'. Discusses geology of the region incl terraces & structure of the mountains. Explains composition of the soil, concentrations of organic material & coal deposits- Mueller does the chemical analysis. Discusses elevations of glaciers. Speculates on geology of Kinchin [Kanchenjunga] & the sudden transition from the sub Himal to higher peaks. The Himalayas need to be studied fully to understand their makeup, so far only the North West corner is known, nobody has explored east of the Kemaon [Kumaon]. JDH is anxious to be the first in this terra nova. BHH sends CD some pamphlets to share with Waterhouse. Relates BHH's answers to CD's questions re: climate for seedlings in India, cultivation of European vegetables, tea plants at Cathmandu [Kathmandu], introduction of the Junma goat, interbreeding of Axis medius & Hemitragus quadri-mammis & Yak or Bison with Buffalo to produce zobos, breeding of wild & domesticated fowl & dogs , bulls covering deer like Rusa hippelaphus, the habits of Tussa silk moth. Duel, death & children of Captain C.. Sends wishes to Darwin family, Wsdgewoods, Westwood, Forbes, Lyells, Horners, Owen & Bell.

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.

JDH writes to Darwin about his travels in Sikkim, specifically Kinchin [Kanchenjunga]. Account of other parts of travels, incl. Nepal, were set to Lyell. Discusses the geography of the region, comprised of many mountain spurs & two great rives, one the Teesta. Native villages built on terraces, not usually found above 5000 ft. Valleys are steep & clad in forest to 12000 ft. Discusses effect in varying mean elevation on vegetation e.g. tropical flora advances further North in Nepal. There is geological evidence of a larger body of water than the current rivers once covering the land, notably deposit of red clay to 12000 ft. Makes further detailed geological observations including notable lack of feldspar. Notes that holy lakes have no outlet but drain away underneath, describes visiting the largest of the lakes & rite performed there. Letter includes diagrams showing cross sections of the mountain ridges. Mentions a Bhothea temple: Catsuperri Goompa. Describes meeting [Archibald] Campbell & Sikkim Rajah at Teesta River & climbing a Mt with the former as high as an abandoned Buddhist Temple with an impressive view towards Bhutan & Nepal. Descended to the Great Rungeet River. Visited Pemiongchi convents with impressive paintings. Describes Yoksun [Yoksom] village, notable for being on rare flat ground, & ascent of Ratong Valley. Observes that abandoned salt trading post, Jongri, 13000 ft, is on a spur unusually covered with gravel mounds, granite boulders & little lake beds with shingle deposits, the formation of which is a mystery. Observes typical glacial & snow bed features appear in great number in Ratong Valley. Compares the forming spurs here to those in Nepal. Describes the peak of Pundim: made from Gneiss & veins of plutonic rock capped with white rock. Ends with some observations on quartz, mica schist & stratified rocks & absence of Hornblends augite or volcanic minerals. Sends regards to Wedgewoods & Bell.

JDH received letter of Oct 6, concerning poor health of Darwin. Requests that his own letters containing speculations are kept or recorded for future discussion at Down. Congratulates Lyell on his Knighthood, & Mrs Lyell. Pamphlets by Hodgson sent Oct 2. He exclaims what have Barnacles to do with ornamental poultry. He refers to his unacknowledged account of the cattle hunt in Ross’ VOYAGE [OF DISCOVERY AND RESEARCH IN THE SOUTHERN AND ANTARCTIC REGIONS]. He regrets the unfavourable review of his letters by the ATHENAEUM, for his father’s sake. He refers to his father’s & Bessy’s [Elizabeth Hooker]poor health. Requests that extracts from his letters to Darwin or Lyell concerning the highest mountain in the world [Kanchenjunga] be sent to the ATHENAEUM to re-establish his credit. He compares his own industry with Humboldt’s natural talents. Lightheartedly compares Barnacle behaviour with polygamy of Bothea [Bhotia] women & refers to work on Cirripedes. He urges Darwin not to fight for the perpetuity of names, referring to the pride & conflicting interests amongst naturalists, & to the fields of mineralogy & chemistry, & to Humboldt & Henslow. He discusses the presidential post [of the Asiatic Society] & dispute between Colevile & Falconer & the correspondence with them. Falconer has gone to Moulmain [Mawlamyine] to report on the Teak Timber & JDH has not heard from him in 6 months whilst a 'nobody' has been put in charge of the [Calcutta Botanic] garden. He describes the altitude sickness he suffered at 1500 feet in the 'snowy passes' & doubts he could climb beyond 1800 feet.

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.

JDH writes to [Charles] Darwin [CD], having read his letter & the one to Hodgson with interest. He expresses his sympathy for CD’s bereavement & H. Wedgewood’s pecuniary loss. JDH discusses CD’s health. The Rajah is being difficult but JDH refers all his grievances to [Archibald] Campbell at Darjeeling. He has reached the Tibetan borders north east of Darjeeling but his Lepchas are afraid. JDH discusses food & provisions; he is clear of the 'malarious' valleys. He wishes to compare the cis & trans slopes but cannot go into Tibet. He compares the landscape to Salvator Rosa’s paintings. The vegetation is rhododendron scrub with pines below. JDH describes exploring the Terai plains & discusses the geology & history of the Himalayas. JDH discusses the particulars & possible glacial formation of the Yangma Valley lake beds & terraces & includes small sketches. He refers to CD’s remarks on the granite construct of the Cordillera [Letter appears incomplete]

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.