From William Thierry Preyer [before 17 February 1870]
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.
| Author: | William Thierry (William) Preyer |
| Addressee: | Charles Robert Darwin |
| Date: | [before 17 Feb 1870] |
| Classmark: | DAR 261.11: 21 (EH 88206073) |
| Letter no: | DCP-LETT-7110 |
From W. T. Preyer 9 May 1870
Summary
Sends his "Charles Darwin, eine biographische Skizze" [Das Ausland 2 Apr 1870].
| Author: | William Thierry (William) Preyer |
| Addressee: | Charles Robert Darwin |
| Date: | 9 May 1870 |
| Classmark: | DAR 174: 68 |
| Letter no: | DCP-LETT-7181 |
To W. T. Preyer 15 May 1870
Summary
Comments on WP’s biographical article on CD. Asks him to thank O. F. Peschel for his present of the publication [Das Ausland 2 Apr 1870].
| Author: | Charles Robert Darwin |
| Addressee: | William Thierry (William) Preyer |
| Date: | 15 May 1870 |
| Classmark: | DAR 147: 256–8 |
| Letter no: | DCP-LETT-7190 |
To W. T. Preyer 17 February [1870]
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.
| Author: | Charles Robert Darwin |
| Addressee: | William Thierry (William) Preyer |
| Date: | 17 Feb [1870] |
| Classmark: | Ralph Colp Jr (private collection) |
| Letter no: | DCP-LETT-7112 |
Preyer, William. 1870b. Charles Darwin, eine biographische Skizze. Das Ausland, 2 April 1870, pp. 314–20.
To Armand de Quatrefages 20 July [1870]
Summary
Sends list of his publications.
Is grateful for interest QdeB has taken in his election [to Académie Française].
| Author: | Charles Robert Darwin |
| Addressee: | Jean Louis Armand (Armand de Quatrefages) Quatrefages de Bréau |
| Date: | 20 July [1870] |
| Classmark: | American Philosophical Society (Mss.B.D25.377); University Archives (dealers) (14 April 2021, lot 74) |
| Letter no: | DCP-LETT-7285 |
From Ernst Haeckel 6 July 1870
Summary
Discusses applicability of evolutionary theory to the question of human origins.
Describes revisions in 2d edition of Natürliche Schöpfungsgeschichte.
His research on calcareous sponges.
Mentions evolutionary content in Gegenbaur’s Vergleichende Anatomie [2d ed. (1870)].
| Author: | Ernst Philipp August (Ernst) Haeckel |
| Addressee: | Charles Robert Darwin |
| Date: | 6 July 1870 |
| Classmark: | DAR 166: 54 |
| Letter no: | DCP-LETT-7268 |
| letter | (6) |
| bibliography | (1) |
| Darwin, C. R. | (3) |
| Preyer, William | (2) |
| Haeckel, Ernst | (1) |
| 1870 | (6) |
