From:
Joseph Dalton Hooker
To:
Charles Robert Darwin
Date:
9 Aug 1866
Source of text:
DAR 102: 94–7
Summary:
More on continental extension vs transport [or migration] hypothesis. New questions raised. On Madeira, why were insects and plants changed so much, birds hardly at all?
Erratic boulders of the Azores.
Contributor:
Darwin Correspondence Project
