Text Online
From:
Darwin, G. H.
To:
Darwin, Emma
Date:
[6 October 1861]
Source of text:
DAR 210.6: 74
Summary:
No summary available.
Contributor:
Darwin Family Letters
Showing 1–4 of 4 items
No summary available.
No summary available.
Orchid anatomy.
Thanks for JG’s book [An introduction to the Trochilidae, or family of humming-birds (1861)], which he has read carefully. Hopes someday to use the information on the close alliance of species in large genera.
CD repudiates hybridity of birds in nature.
Intends to extract the cases of "races" or doubtful species. They show that "determination of species is not a simple affair".