Summary

Testimonial for James Archer, who leaves CD’s service after six months.

Summary

Suggests, if further notice is to be taken of Variation, that the reviewer grapple with the subject of Pangenesis. Thanks him for his fair and friendly spirit.

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Gives details of some points that occurred to him while reading Variation, including observations on horses, cattle, silkworms, and hereditary baldness and disease.

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Sends a copy of George Bentham’s Anniversary address to the Linnean Society of London (Bentham 1868).

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Goes to N. Wales with Huxley.

Wishes to borrow Duke of Argyll’s Reign of law.

The BAAS Presidential Address [Rep. BAAS 38 (1868): lviii–lxxv] – his unhappiness about it; history of botany requires too much reading.

Smith will supply notes on Euryale.

Summary

Describes the action of facial muscles at the onset of crying as observed by Langstaff.

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On dentition of moles. On double teeth [see Variation 2: 391].

Difference in size of male and female Crustacea.

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Thanks for sending Variation.

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Thanks Charles Langstaff for his observations relating to expression. Has requested observations on the platysma. Discusses the actions of other facial muscles, especially during crying. [Encloses 5828.]

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If CD is not convinced by his notes on sterility, ARW has little doubt that he is wrong. In fact he was only half-convinced by his own arguments.

Modifies his first proposition [a species varies occasionally in two directions, but owing to free inter-crossing the variations never increase] and further discusses the subject.

Encloses Berthold Seemann’s notes on flora of the Hawaiian Islands. Presence of European alpine species in Hawaiian volcanoes is a "hard nut" for geographical distribution [but see ARW’s Island life (1880), p. 323].

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Difference between sexes of Ibis rubra; change in plumage.

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Reports on Prof. Cornalia’s observations on the proportion of sexes in bees, and in healthy and sick silk moths, in nature and under domestication.

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He never intended "A Lift for Darwin" as a serious title but as a way of arranging it. Lyell’s suggestion seems best to him: "Facts and Arguments For Darwin".

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Notes the differences in seed production between cross- and self-fertilized flowers of Victoria regia.

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Warns ARW of dubious character of list of European alpine genera and species in volcanoes of Hawaii. Problems of geographical distribution in oceanic islands.

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Corrects errors of detail in Variation.

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Thanks CD for copy of Variation.

CD’s work on pigeons demonstrates the close relationship between modifications in soft tissues and the hard parts, which are the only ones we possess in the fossil state.

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BDW’s letter [6051?] and his notes are a "mine of wealth". The negative evidence is of much value. Sexual selection is a perplexing subject – finds he "must make the best of a rather bad job".

Sends copy [of Variation].

Summary

Asks JM to send Variation to G. Boccardo in Italy.

Sends title (suggested by Lyell) for translation of Fritz Müller’s Für Darwin (which Dallas is translating). CD does not wish to go to great expense in advertising it.

Summary

Thanks for Casimir de Candolle’s paper ["Théorie de l’angle unique en phyllotaxie", Arch. Sci. Phys. & Nat. 23 (1865): 199–212].