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From:
Charles Robert Darwin
To:
Spectator
Date:
11 Jan 1873
Source of text:
Spectator , 18 January 1873, p. 76.
Summary:

Discusses two factors possibly causing modification of body or mind of an organism; habit and direct action of external conditions on the one hand, and selection, natural or artificial, on the other; considers their relative importance.

Contributor:
Darwin Correspondence Project