Summary

Spoke too harshly about CD’s involvement in nomenclatural reform.

JDH used to think CD "too prone to theoretical considerations about species", hence was pleased CD took up a difficult group like barnacles. CD’s theories have progressed but JDH not converted. Sikkim has not cleared up his doubts about CD’s doctrines.

Argument with Falconer.

Summary

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?

Summary

Thanks JSH for information and suggestions on benefit clubs,

and for a shipment of fossil cirripedes.

Summary

On Himalayan stratigraphy. Believes JDH’s observations of glacial action are the first ever done east of Urals.

Barnacles and the species theory; impressed with variation.

Effect of CD’s species sketch on JDH’s view of willow systematics.

Summary

Does not recommend that JDH publish extracts of his letters from India in the Athenæum.

CD criticises JDH’s observations on glacial deposits in Himalayas as insufficiently clear and detailed.

CD will live to finish barnacles and make a fool of himself over species.

Summary

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.

Summary

J. B. Innes is greatly obliged for JSH’s letter. JSH’s observation of chalk flints strikes CD as "very curious".

Summary

Expresses sympathy to MSH on W. J. Hooker’s illness.

Will send his comments on Hodgson’s physico-geographical memoir ["On the physical geography of the Himalayas", J. Asiat. Soc. Bengal 18 (1849): 761–88] directly to him.

Summary

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.

Summary

Encloses a letter from J. D. Hooker [see 1257], thinking that WJH would like to see it.

Summary

CD thinks great dam across Yangma valley is a lateral glacial moraine.

Reports on Birmingham BAAS meeting.

Details of water-cure.

Barnacles becoming tedious; careful description shows slight differences constitute varieties, not species.

Lamination of gneiss.

Summary

Physical description of Sikkim mountains.

Travelling through Kinchin snows.

Transported boulders.

Summary

List of Australian plants that have become naturalised in the Nilgiris [India] and are turning out the native trees.

Summary

Thanks for Dawson’s letter. Doubts his evidence that climate of land was not glacial when upheaved after submergence.

Encloses memorandum of questions for C. V. Naudin.

Expression of the emotions.

Is building a hothouse for plant experimenting.

JDH’s ideas on America are more atrocious than his. What a new idea that struggle for existence is necessary to try to purge a government! Probably true. Slavery draws him one way one day, another the next. Yankees are "detestable toward us". Tocqueville.

Summary

Yellow anthers of Heterocentron produce on the same plant thrice as many seeds as the crimson anthers. Crimson anther seeds produce dwarf plants, others rise high up. Monochaetum ensiferum facts are still more strange. Wants to investigate the case, and asks for a plant of the Melastomataceae just before flowering.

Has JDH a Rhododendron boothii from Bhutan with pistil bent the wrong way?

Summary

Pleased with news of BAAS meeting

and Scott’s possible position as Thomas Anderson’s curator.

Suggests Wallace is due for a Royal Medal.

Agrees with JDH’s criticism of Lyell’s address [see 4614].

Bentham’s Linnean Society address treats continuity of life in a vague non-natural sense.

Rereading his old MS [Natural selection] CD is impressed with work he had already done.

Writing Variation much harder than Climbing plants.

Encloses request to JDH to propose, or suggest on his behalf, that the Ray Society publish a translation of C. F. von Gärtner’s Versuche und Beobachtungen über die Bastarderzeugung im Pflanzenreich (1849).

Summary

Acquired characteristics.

Huxley’s lectures: good on induction, bad on sterility, obscure on geology.

Asa Gray on slavery.

Falconer’s partial conversion.

Alphonse de Candolle on Origin.

Summary

Independence of variation from climate shown by several plant genera; CD asks for confirmation.

Progressing with book [Natural selection].

Summary

Bates agrees with CD on neuter ants.

Orchids.

Repeating experiment of C. F. v. Gärtner to study Huxley’s idea of physiological species.

Summary

On the transport of fish eggs by the water-beetle Dytiscus marginalis.