Discusses the similarity in size, shape, and structure of the blood corpuscles of the Aves. Notes differences between the corpuscles of the domestic dog and some wild species.
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The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.
Discusses the similarity in size, shape, and structure of the blood corpuscles of the Aves. Notes differences between the corpuscles of the domestic dog and some wild species.
Will attend the Philoperisteron [pigeon fanciers’ club] if he possibly can.
Thanks JMH for book of poems.
Recalls early days together. He cannot visit due to health.
Thanks WDF for his help and reports on progress in "the Cock and Hen line of business". Has written to every quarter of the world for skins of poultry and pigeons.
As for seeds, Hooker and Bentham obstinately refuse to believe they can live even a few years in the ground.
Thanks for JSH’s letter, which has been of real use.
Complains of the trouble caused by reports to Government required of Benefit Clubs.
Interested in case of Canada geese with seed in crop, because means of distribution is now a great hobby.
Delighted to hear that JD’s research is continuing. CD has heard that JD’s paper will at last be published. He is flattered by the form [as a letter addressed to CD] of communication. [See 1651a and 1819a, published in Phil. Trans. R. S. 146 (1856): 21–9 and Proc. R. S. London 8 (1856–7): 27–33.]
Encloses "notes for Mr. D" [see 1818] and a memorandum on the wild cattle of southern India [see 1819].
Breeds of silky fowl of China and Malaya. Black-skinned fowl.
Doubts any breed of canary has siskin blood; all remain true to their type.
Wild canary and finch hybrids.
Hybrids between one- and two-humped camels.
Does not regard zebra markings on asses as an indication of interbreeding but as one of the many instances of markings in the young which more or less disappear in the adult.
Crossing of Coracias species at the edges of their ranges.
Regional variations and intergrading between species of pigeons.
Regards the differences in Treron as specific [see Natural selection, p. 115 n. 1].
Gives other instances of representative species or races differing only in certain details of colouring.
On the vitality of the ova of the Salmonidae at different stages of development.
Is attempting to get skins of poultry from all quarters of the world. Wants to inspect poultry collections.
Requests that JEG secure the assistance of Samuel Birch in regard to information about varieties of domesticated animals and plants in China. Encloses memorandum.
Discusses chapter [6] on cleavage and foliation in South America. Notes especially cleavage where two series cross and cleavage as basis of foliation in metamorphosed rock. Notes foliation in rocks that have been liquefied by heat. Mentions case described in his "Geology of the Falkland Islands" [Collected papers 1: 203–12]. Discusses relationship of cleavage to beds. Speculations on association between grauwacke and clay-slates.
Is obliged for JEG’s assistance.
Alphonse de Candolle’s Géographie botanique [raisonnée (1855)] strikes him as a wonderful, admirable work.
Requests WE’s measurements of tigers.
Asks about a work on domestic pigeons in an Eastern language. Will consult [Ayeen Akbery or, the institutes of the Emperor Akber, trans. from Persian by Francis Gladwin, 2 vols. (1777, 1800)].
Asks for specimen skins of domestic pigeons and poultry. [See Variation 1: 205.]
Believes the goldfish originates from a wild, gold variety of Chinese carp.
Gallinaceous birds.
Crested turkeys.
EB divides the gallinaceous birds into five families on anatomical distinctions.
Wild dog species of India and Asia; ranges of some species, specific identity of others.
The fauna of the Seychelles.
Breeding of fowls in India and Africa.
Occurrence of turkeys in Africa.
Refers to some of his own papers giving fuller details of points raised previously.
Thanks JP for beautiful book [? The rivers, mountains and sea-coast of Yorkshire, 2d ed. (1855)].
Inquires about a Mr Smith, who might prove helpful "in the domestic bird line".
The information correspondent hopes to get from M.-J.-P. Flourens will be valuable.
CD is keeping all varieties of pigeons, poultry, ducks, etc. for his work on variation.
Thanks LH for memorandum [missing] by K. R. Lepsius.
Suggests that J. E. Gray and/or G. R. Waterhouse might be willing to set her butterfly collection. Recommends that her children should collect their own butterflies.