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To Charles Lyell   12 July [1872]

Summary

Comments on enclosed discussion of S. American geology by Agassiz. Mentions elevation of Patagonia and glaciation.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  12 July [1872]
Classmark:  American Philosophical Society (Mss.B.D25.420)
Letter no:  DCP-LETT-8405

To J. D. Hooker   12 July [1872]

Summary

Overjoyed at the way the newspapers have taken up JDH’s case. The memorial has done great good this way, whatever the wretched Government does. It is enough to make one a Tory. JDH has done a service to all men of science by showing governments that they cannot be trampled on.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  12 July [1872]
Classmark:  DAR 94: 222–3
Letter no:  DCP-LETT-8406

To ?   12 July [1872–4]

Summary

Has not strength or time to hunt for Herminium monorchis; has failed to make orchid seeds germinate.

Author:  Charles Robert Darwin
Addressee:  Unidentified
Date:  12 July [1872-4]
Classmark:  National Library of Russia (Collection of P. Waxell (F. 965): no 637)
Letter no:  DCP-LETT-8406F

From John Denny   12 July 1872

Summary

Replies to CD’s queries. Duke of Cornwall Pelargonium is fertile with its own pollen. Has failed to produce hybrids from other varieties besides P. peltatum and P. elegans. Sends numbers of the Florist which contain an account of his mode of procedure ["On cross-breeding pelargoniums" Florist & Pomologist (1872): 10, 34, 50].

Reports a confirmation of his theory of the prepotence of the male parent.

Author:  John Denny
Addressee:  Charles Robert Darwin
Date:  12 July 1872
Classmark:  DAR 162: 159
Letter no:  DCP-LETT-8407