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From:
Gilbert William Child
To:
Charles Robert Darwin
Date:
16 Feb [1870]
Source of text:
DAR 161: 142
Summary:

Criticises chapter on good effect of crossing in Variation: (1) does not accept that inbreeding alone results in degeneracy; (2) good effects of crossing exaggerated; (3) denies deleterious effects of close marriage in humans.

Contributor:
Darwin Correspondence Project
From:
Johann Friedrich Theodor (Fritz) Müller
To:
Charles Robert Darwin
Date:
16 Feb 1870
Source of text:
Linnean Society of London
Summary:

Sends specimens of Passiflora and seeds for T. H. Farrer [letter enclosed with 7188].

Contributor:
Darwin Correspondence Project
From:
Sir John Herschel
To:
Henry H. H. Cameron
Date:
[16 February 1870]
Source of text:
RS:HS 5.317 & 24.298
Summary:

Advice and guidance on the path he is to pursue when he goes to university.

Contributor:
John Herschel Project
From:
William Swale
To:
Charles Robert Darwin
Date:
16 Feb [1870?]
Source of text:
DAR 177: 324
Summary:

Sends CD some notes on the habits of the "American Blight Bird" in New Zealand.

Contributor:
Darwin Correspondence Project
Text Online
From:
A. C. Swinton
To:
Alfred Russel Wallace
Date:
16 February 1870
Source of text:
British Library, The: BL Add. 46439 f. 64
Summary:

No summary available.

Contributor:
Alfred Russel Wallace Correspondence Project
Text Online
From:
Alfred Russel Wallace
To:
John Hampden
Date:
16 February 1870
Source of text:
Hampden, J. (1870). In: Is Water Level or Convex After All? The Bedford Canal Swindle Detected & Exposed, Etc . Swindon: Alfred Bull. [pp. 15-16]
Summary:

No summary available.

Contributor:
Alfred Russel Wallace Correspondence Project
From:
William Thierry (William) Preyer
To:
Charles Robert Darwin
Date:
[before 17 Feb 1870]
Source of text:
DAR 261.11: 21 (EH 88206073)
Summary:

Notes the differences in haemoglobin between species; this proves, to WP, that natural selection does not act only on morphological development.

Remarks on the differences and similarities in the effects of prussic acid on different groups of animals.

Questions CD on his early education and influences.

Contributor:
Darwin Correspondence Project
Text Online
From:
Darwin, Elizabeth
To:
Darwin, H. E.
Date:
17 [February 1870]
Source of text:
DAR 219.8: 19
Summary:

No summary available.

Contributor:
Darwin Family Letters
Text Online
From:
Darwin, H. E.
To:
Darwin, Emma
Date:
17 February 1870
Source of text:
DAR 245: 33a
Summary:

No summary available.

Contributor:
Darwin Family Letters
From:
William Erasmus Darwin
To:
Charles Robert Darwin
Date:
[c. 17 Feb 1870]
Source of text:
Cornford Family Papers (DAR 275: 36)
Summary:

Ask whether CD would like to subscribe again to National Education League. Describes the League’s goals.

Contributor:
Darwin Correspondence Project
Text Online
From:
George Bentham
To:
Ferdinand von Mueller
Date:
17 February 1870
Source of text:
RB MSS M4, Library, Royal Botanic Gardens Melbourne
Summary:

No summary available.

Contributor:
Correspondence of Ferdinand von Mueller Project
From:
Charles Robert Darwin
To:
Gustav Jäger
Date:
17 Feb 1870
Source of text:
Frau Dr Hildegard Jaeger (private collection)
Summary:

Encloses his letter to GJ [6885], which was returned.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
William Thierry (William) Preyer
Date:
17 Feb [1870]
Source of text:
Ralph Colp Jr (private collection)
Summary:

Comments on effects of prussic acid on different individuals of the same species and other physiological research by WP.

Provides information about his studies in Edinburgh and Cambridge and qualifications he had for Beagle voyage. Describes influence of R. E. Grant and J. S. Henslow.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
William Darwin Fox
Date:
18 Feb [1870]
Source of text:
Isle of Wight Record Office (Ac 2008/79)
Summary:

Invites WDF to visit.

Describes activities of his children.

Contributor:
Darwin Correspondence Project
Text Online
From:
Hermann August Hagen
To:
Alfred Russel Wallace
Date:
18 February 1870
Source of text:
British Library, The: BL Add. 46435 ff. 159-160
Summary:

No summary available.

Contributor:
Alfred Russel Wallace Correspondence Project
From:
Henry H. H. Cameron
To:
Sir John Herschel
Date:
[18 February 1870]
Source of text:
RS:HS 5.318
Summary:

Thanks for his kindly advice. News of his own progress.

Contributor:
John Herschel Project
From:
Vladimir Onufrievich Kovalevsky (Владимир Онуфриевич Ковалевский)
To:
Charles Robert Darwin
Date:
20 Feb [1870]
Source of text:
DAR 169: 60
Summary:

Moritz Wagner is going to attack selection theory in his new book on his travels in America [Naturwissenschaftliche Reisen im tropischen Amerika (1870)].

K. G. Semper may attack CD’s theory of coral islands.

Contributor:
Darwin Correspondence Project
Text Online
From:
Alfred Russel Wallace
To:
John Hampden
Date:
20 February 1870
Source of text:
Hampden, J. (1870). In: Is Water Level or Convex After All? The Bedford Canal Swindle Detected & Exposed, Etc . Swindon: Alfred Bull. [p. 16]
Summary:

No summary available.

Contributor:
Alfred Russel Wallace Correspondence Project
Text Online
From:
Darwin, Emma
To:
Darwin, H. E.
Date:
21 February [1870]
Source of text:
DAR 219.9: 74
Summary:

No summary available.

Contributor:
Darwin Family Letters
Text Online
From:
Darwin, G. H.
To:
Darwin, H. E.
Date:
[21 February 1870]
Source of text:
DAR 251: 2243
Summary:

No summary available.

Contributor:
Darwin Family Letters