Darwin-Hooker Letters : Letter from J. D. Hooker to C. R. Darwin 9 August 1866
Hooker, Joseph Dalton
Darwin-Hooker Letters
<p style='text-align: justify;'>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?</p><p style='text-align: justify;'>Erratic boulders of the Azores.</p>