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From George Gulliver   20 January [1856]

Summary

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.

Author:  George Gulliver
Addressee:  Charles Robert Darwin
Date:  20 Jan [1856]
Classmark:  DAR (CD library – Gulliver, George 1846)
Letter no:  DCP-LETT-1632

From Edward Blyth   8 January [1856]

Summary

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.

Author:  Edward Blyth
Addressee:  Charles Robert Darwin
Date:  8 Jan [1856]
Classmark:  DAR 98: A110–13, A117–21
Letter no:  DCP-LETT-1817

From John Davy   10 January 1856

Summary

On the vitality of the ova of the Salmonidae at different stages of development.

Author:  John Davy
Addressee:  Charles Robert Darwin
Date:  10 Jan 1856
Classmark:  Proceedings of the Royal Society of London 8 (1856–7): 27–33
Letter no:  DCP-LETT-1819A

From Edward Blyth   23 January 1856

Summary

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.

Author:  Edward Blyth
Addressee:  Charles Robert Darwin
Date:  23 Jan 1856
Classmark:  DAR 98: A122–A125
Letter no:  DCP-LETT-1825
Document type
letter (4)
Addressee
Darwin, C. R.[X]
Date
1856
01
08 (1)
10 (1)
20 (1)
23 (1)
letter