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From ?   6 April 1868

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Summary

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

Author:  Unidentified
Addressee:  Charles Robert Darwin
Date:  6 Apr 1868
Classmark:  DAR 159: 139
Letter no:  DCP-LETT-6097

To Peter Martin Duncan   13 April [1868?]

Summary

Promises to send coral specimens.

Author:  Charles Robert Darwin
Addressee:  Peter Martin Duncan
Date:  13 Apr [1868?]
Classmark:  American Philosophical Society (Mss.B.D25.272)
Letter no:  DCP-LETT-13802

To Moritz Wagner   [April–June 1868]

Summary

Thanks MW for his essay [Die Darwin’sche Theorie und das Migrationsgesetz der Organismen (1868)]. Is highly gratified that MW agrees with him to a considerable extent.

Almost wishes that he could believe in the importance of isolation to the same extent as MW.

Author:  Charles Robert Darwin
Addressee:  Moritz Friedrich (Moritz) Wagner
Date:  [Apr–June 1868]
Classmark:  LL 3: 157; DAR 148: 198
Letter no:  DCP-LETT-5760

From W. E. Darwin   [13 April 1868]

Summary

Action of facial muscles at onset of crying.

Author:  William Erasmus Darwin
Addressee:  Charles Robert Darwin
Date:  [13 Apr 1868]
Classmark:  DAR 162: 98
Letter no:  DCP-LETT-5965

From W. E. Darwin   [7–15 April 1868]

Summary

Langstaff has never seen the platysma act, and he believes it to be rudimentary in humans.

Author:  William Erasmus Darwin
Addressee:  Charles Robert Darwin
Date:  [7–15 Apr 1868]
Classmark:  DAR 162: 80/4
Letter no:  DCP-LETT-6076

From Frederick F. Geach   April 1868

Summary

Sends expanded answers [to Queries about expression], in view of CD’s statement that his first list had not been sufficiently explanatory. Is pleased that some answers confirmed CD’s views [see Expression, passim].

Author:  Frederick F. Geach
Addressee:  Charles Robert Darwin
Date:  Apr 1868
Classmark:  DAR 165: 23
Letter no:  DCP-LETT-6077

From J. J. Weir   [before 28 April] 1868

Summary

Proportion of sexes in chaffinches.

Pugnacity of blackbirds and robins.

Harrison Weir reports up to nine eggs in starling nests.

Newspaper report of a sheep born with its owner’s brand.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [before 28 Apr] 1868
Classmark:  DAR 86: C1–2, DAR 84.1: 73–4
Letter no:  DCP-LETT-6078

From William Bowman   1 April [1868]

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Summary

Asks for precise reference in Charles Bell to subject of CD’s question. Agrees to assist CD’s investigation. Asks about Bell’s observations on eyes engorged with blood. Has noticed that eyes of children with excessive photophobia tend to be pale when forced open.

Author:  William Bowman, 1st baronet
Addressee:  Charles Robert Darwin
Date:  1 Apr [1868]
Classmark:  DAR 160: 268
Letter no:  DCP-LETT-6079

From G. H. K. Thwaites   1 April 1868

Summary

Has circulated CD’s Queries about expression and gives some of his observations of the natives.

Author:  George Henry Kendrick Thwaites
Addressee:  Charles Robert Darwin
Date:  1 Apr 1868
Classmark:  DAR 178: 123
Letter no:  DCP-LETT-6080

To William Bowman   2 April [1868]

Summary

Gives Charles Bell’s explanation of the contraction of the orbicularis during screaming and seeks confirmation of his view because the action is "the key-stone of a whole class of expressions". Curious to learn WB’s conclusion in regard to the relation between contraction of the orbicularis and secretion of tears. Notes that voluntary contraction of the orbicularis causes no tears.

Author:  Charles Robert Darwin
Addressee:  William Bowman, 1st baronet
Date:  2 Apr [1868]
Classmark:  DAR 249: 72 (photocopy)
Letter no:  DCP-LETT-6081

From George Robert Gray   2 April 1868

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Summary

On the changes in plumage of scarlet ibis at the zoo in breeding season.

Author:  George Robert Gray
Addressee:  Charles Robert Darwin
Date:  2 Apr 1868
Classmark:  DAR 84.1: 90–1
Letter no:  DCP-LETT-6082

From Robert Caspary   2 April 1868

Summary

Finds important differences between English and German versions of Variation on graft-hybrids.

Experiments and observations on submerged flowers.

Author:  Johann Xaver Robert (Robert) Caspary
Addressee:  Charles Robert Darwin
Date:  2 Apr 1868
Classmark:  DAR 161: 122
Letter no:  DCP-LETT-6083

To John Bush   2 April [1868]

Summary

Thanks JB for his information. Has heard of analogous cases to JB’s observations on [colours of] crossed rats; the offspring of white and grey mice are stated to be either white or grey and never piebald.

Author:  Charles Robert Darwin
Addressee:  John Bush
Date:  2 Apr [1868]
Classmark:  Private collection
Letter no:  DCP-LETT-6084

To Fritz Müller   3 April [1868]

Summary

Movement in plants.

Dimorphism.

Would welcome FM’s opinion of Pangenesis.

Author:  Charles Robert Darwin
Addressee:  Johann Friedrich Theodor (Fritz) Müller
Date:  3 Apr [1868]
Classmark:  The British Library (Loan MS 10 no 23)
Letter no:  DCP-LETT-6085

To J. D. Hooker   3 April [1868]

Summary

Asks for [John?] Smith’s exact count of seeds of the crossed and self-fertilised Victoria water-lily. Similar question on Euryale seed and seedlings.

JDH’s coming [BAAS] Presidential Address.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  3 Apr [1868]
Classmark:  DAR 94: 60–1
Letter no:  DCP-LETT-6086

From Henry Doubleday   3 April 1868

Summary

Otto Staudinger’s catalogue shows prices of female Lepidoptera to be higher than those of males.

Author:  Henry Doubleday
Addressee:  Charles Robert Darwin
Date:  3 Apr 1868
Classmark:  DAR 81: 78, DAR 82: A8
Letter no:  DCP-LETT-6087

From Camille Dareste   3 April 1868

Summary

Thanks for Variation.

CD must be happy about the tendency toward acceptance of his views, though it is regrettable that France is backward in this regard.

His own work goes slowly, but he still hopes his work on artificially produced monstrosities will help to answer the question of the origin of species.

Author:  Gabriel-Madeleine-Camille (Camille) Dareste
Addressee:  Charles Robert Darwin
Date:  3 Apr 1868
Classmark:  DAR 162: 44
Letter no:  DCP-LETT-6088

From Edward Blyth   [3 April 1868]

Summary

Discusses apes and their relationships to each other. Writes particularly of the gibbon, its structure and well-developed legs giving it the ability to walk without using its hands.

Author:  Edward Blyth
Addressee:  Charles Robert Darwin
Date:  [3 Apr 1868]
Classmark:  DAR 45: 29, DAR 83: 156
Letter no:  DCP-LETT-6089

From Fritz Müller   3 April 1868

Summary

Thanks CD for sending him copy of Variation.

Describes results of his brother’s [August Müller] experiments on effect of climate on maize.

Like ancestors of horses, young tapir is also striped.

Author:  Johann Friedrich Theodor (Fritz) Müller
Addressee:  Charles Robert Darwin
Date:  3 Apr 1868
Classmark:  Möller ed. 1915–21, 2: 137–8
Letter no:  DCP-LETT-6089A

From W. E. Darwin   3 April 1868

Summary

Discusses how they might enquire about any provisions in the laws of partnership concerning lunacy.

Author:  William Erasmus Darwin
Addressee:  Charles Robert Darwin
Date:  3 Apr 1868
Classmark:  Cornford Family Papers (DAR 275: 32)
Letter no:  DCP-LETT-6089F
Document type
letter (81)
Date
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