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Still awaiting reply to Lord Dalhousie's letter from [Sikkim] Rajah. If [Archibald] Campbell finds out the Rajah intends to oppose them they will travel to Jongri on the south face of Kinchin [Kanchenjunga] rather than going via the east face to the Tibet passes.[Brian Houghton] Hodgson [BHH] too ill to accompany JDH & AC also injured. JDH sent [Hugh] Falconer [HF] his journal of trip from Bhaugalpore [Bhagalpur] to Darjeeling. HF is ill but has found JDH another Portuguese servant who he hopes will be half as good as 'Friday'. He has added to his growing collection: Balanophora typhina, B. polyandra, a Rhubarb & a new Aconite used to make 'Bikh' poison, of which he has museum specimens. Recounts story of man killed with Bikh poisoned arrow. Has sent live roots of 150 species to Calcutta [Kolkata], mostly Orchideae & Seitamineae. Has specimen of a very large tree fern for WJH. During break in rains JDH collected more roots incl. Magnolia, Helwingia & white Rhododendrons. Oaks & most other seeds are not ripe yet, Compositae are just blooming & there are relatively few grasses. Though he is obliged by expectation to embrace many disciplines in his explorations, JDH has not neglected Botany. By measuring mountains, recording weather & explaining his work locally JDH has gained credit in India. The Surveyor General was always secretive about his activities. JDH has measured Kanchenjunga & Sinchal with instruments from Captain Thuilliers & calculated height of Tonglo with Muller. JDH has sketched the flags at Ging & a panoramic view of country around Darjeeling. Also found: pink flowered Luculia, [William] Griffith's Larch & a curious little Rhododendron. Has forwarded a letter from Thomas Thomson from Karakerum range beyond Ladakh, also written to Mr Philipps. Discusses conditions for sowing some seeds he is enclosing & compares to similar sent by Edgeworth for the Gibson Craigs in Edinburgh. The Lacteraea should be in flower soon, he thinks it will be half hardy.
Col. Ouseley had a son at Addiscombe. Has ascertained the relative value of the various branches of study in the final examination. Gives table of values. Hears that military drawing puzzles some. Children are well. If Johnny [Herschel] draws as well as Louisa [Herschel] at 14 he will do well.
Encloses perturbation sheets for checking.
Thanks for answers about moon and proof of JH's next book. Seeks evidence to support claim that clouds disappear when moon is full. Enquires about lunar formulas.
Send thanks for informing him of barnacles and asks that they be sent, directed to him, to the Geological Society.
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Remarks in response to GA's 1848-10-4..
A second attempt by RC to defend his conduct.
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CD makes progress with barnacles. Describes "supplemental" males in detail. In working out metamorphosis, their crustacean homologies followed automatically.
CD opposes appending first describer’s name to specific name.
Discusses U. J. J. Leverrier's paper on Neptune. Difference between distance of real and theoretical planets. News that JH is going to publish Outlines Astr. Hopes to see him at Cambridge on the day the Public Orator is being elected.
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Asks JH to review Lord Lovelace's [William King's] paper on moon's influence on weather.
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Some question of Harvard University observer having observed the satellite [see JH's 1848-9-22] one day before WL.
[Addressed to 'General ?'.] Comments on memo on refraction sent to Thomas Maclear.
Quotes passage from A. E. P. Gasparin comparing JH's actinometer to other such instruments. Seeks JH's opinion of Adolphe Quetelet's hypothesis of heat. Question on photographic chemicals and 'calorific rays.'