From:
Charles Robert Darwin
To:
Joseph Dalton Hooker
Date:
23 Nov [1856]
Source of text:
DAR 114: 184
Summary:
CD, attempting to clarify debate, states more of his position. External conditions cause "mere variability". Formation of species due to selection. Relation of an organism to its associates far more important than external conditions.
Contributor:
Darwin Correspondence Project
