Darwin-Hooker Letters : Letter from C. R. Darwin to J. D. Hooker 15 November [1856]
Darwin, Charles Robert
Darwin-Hooker Letters
<p style='text-align: justify;'>CD finds JDH’s objections to a mundane cold period significant, and he endeavours to show how they do not rule out mutability.</p><p style='text-align: justify;'>He is writing on crossing.</p>