To Melchior Neumayr 9 March 1877
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.
| Author: | Charles Robert Darwin |
| Addressee: | Melchior Neumayr |
| Date: | 9 Mar 1877 |
| Classmark: | Wellcome Collection (MS.7781/1–32 item 16) |
| Letter no: | DCP-LETT-10884 |
To C. F. Claus 9 March 1877
Summary
Warm thanks for CC’s letter. CD needed no word from CC to be convinced of his high opinion.
| Author: | Charles Robert Darwin |
| Addressee: | Carl Friedrich Claus |
| Date: | 9 Mar 1877 |
| Classmark: | Staatsbibliothek zu Berlin – Preußischer Kulturbesitz (Slg. Darmstaedter Lc 1859: Darwin, Charles, Bl. 210–211) |
| Letter no: | DCP-LETT-10885 |
To C. H. Blackley 9 March 1877
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.
| Author: | Charles Robert Darwin |
| Addressee: | Charles Harrison Blackley |
| Date: | 9 Mar 1877 |
| Classmark: | Yale University Medical Historical Library, Harvey Cushing / John Hay Whitney Medical Library (MMS) |
| Letter no: | DCP-LETT-10886 |
| letter | (3) |
| Darwin, C. R. | (3) |
| Blackley, C. H. | (1) |
| Claus, C. F. | (1) |
| Neumayr, Melchior | (1) |
| Darwin, C. R. | |
| Blackley, C. H. | (1) |
| Claus, C. F. | (1) |
| Neumayr, Melchior | (1) |
