From:
Charles Robert Darwin
To:
Joseph Dalton Hooker
Date:
2 Dec [1854]
Source of text:
DAR 114: 158
Summary:
JDH’s "grand speech" on receiving the Royal Medal.
Contributor:
Darwin Correspondence Project
Showing 1–3 of 3 items
JDH’s "grand speech" on receiving the Royal Medal.
Is Bentham’s list of aberrant genera biased by exclusion of genera with many species?
JDH’s belief that Aquilegia varieties are one species is consistent with their great interfertility.
Debates aberrant species, e.g., Ornithorhynchus and Echidna, with JDH. CD argues they are result of extinction having removed intermediate links to allied forms.
Studying effects of disuse in wings of tame and wild ducks.
Tabulations showing that number of species in a genus is not correlated with number of genera in an order.