From:
John Lubbock, 4th baronet and 1st Baron Avebury
To:
Charles Robert Darwin
Date:
9 Dec [1867]
Source of text:
DAR 170: 60
Summary:
Introduction of humble-bees into Australia.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Herbert Spencer
Date:
9 Dec [1867]
Source of text:
DAR 147: 485a
Summary:
Thanks for copy of HS’s First principles [? 2d ed. (1867)].
Comments on HS’s Principles of biology [1864, 1867].
Contributor:
Darwin Correspondence Project
From:
Francis Walker
To:
Charles Robert Darwin
Date:
9 Dec 1867
Source of text:
DAR 82: A48–9
Summary:
The horns and spines of homopterous insects do not vary between sexes. Sexual differences in Blattidae.
Contributor:
Darwin Correspondence Project
From:
Abraham Dee Bartlett
To:
Charles Robert Darwin
Date:
9 Dec 1867
Source of text:
DAR 84.1: 38–9
Summary:
On the summer, or breeding, plumage of birds.
Contributor:
Darwin Correspondence Project
