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From Thomas Rivers 26 April 1867
Summary
Sends a root of a wild oat-grass from California and the root of a variety of barley that came from it. Several varieties of barley, all differing from English varieties, came up in the same bed of oat-grass. "The transmutation of a genus seems almost incredible" but TR has seen so many changes he has ceased to doubt strongly.
| Author: | Thomas Rivers |
| Addressee: | Charles Robert Darwin |
| Date: | 26 Apr 1867 |
| Classmark: | DAR 176: 170 |
| Letter no: | DCP-LETT-5516 |
From Thomas Rivers 9 September 1867
Summary
Reports on a curious cross in peach varieties, in which the male made a firm large peach into a fruit more almond-like than itself.
| Author: | Thomas Rivers |
| Addressee: | Charles Robert Darwin |
| Date: | 9 Sept 1867 |
| Classmark: | DAR 176: 171 |
| Letter no: | DCP-LETT-5624 |
