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DCP-LETT-10886

From:
Charles Robert Darwin
To:
Charles Harrison Blackley
Date:
9 Mar 1877
Source of text:
Yale University Medical Historical Library, Harvey Cushing / John Hay Whitney Medical Library (MMS)
Summary:

Thanks for CHB’s essay [New observations on hay-fever (1877?)]. The calculation of the weight of pollen-grains is wonderful. Suggests he consult Cross and self-fertilisation, pp. 376, 405 for information on this subject.

Contributor:
Darwin Correspondence Project

DCP-LETT-10885

From:
Charles Robert Darwin
To:
Carl Friedrich Claus
Date:
9 Mar 1877
Source of text:
Staatsbibliothek zu Berlin – Preußischer Kulturbesitz (Slg. Darmstaedter Lc 1859: Darwin, Charles, Bl. 210–211)
Summary:

Warm thanks for CC’s letter. CD needed no word from CC to be convinced of his high opinion.

Contributor:
Darwin Correspondence Project

DCP-LETT-10884

From:
Charles Robert Darwin
To:
Melchior Neumayr
Date:
9 Mar 1877
Source of text:
Wellcome Collection (MS.7781/1–32 item 16)
Summary:

Thanks MN for essay ["Die Congerien", Abh. Geol. Bundesanst. Wien 7 (1875)]. It is the best case CD has met, showing "direct influence of conditions of life on the organization". A. Hyatt has come to same conclusion: that closely similar forms may be derived from distinct lines of descent. CD did not emphasise in Origin the direct action of environment on modification of species; most of the best evidence has been observed since its publication.

Contributor:
Darwin Correspondence Project
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