Darwin-Hooker Letters : Letter from C. R. Darwin to J. D. Hooker 5 August [1856]
Darwin, Charles Robert
Darwin-Hooker Letters
<p style='text-align: justify;'>Agrees that Lyell’s letters shed no new light on extensions issue. Continental extensions: opposes their being hypothesised all over world.</p><p style='text-align: justify;'>Commonality of alpine plants damns both extension and migration.</p>