Darwin-Hooker Letters : Letter from C. R. Darwin to J. D. Hooker 16 [May 1857]
Darwin, Charles Robert
Darwin-Hooker Letters
<p style='text-align: justify;'>Asks JDH’s opinion, and botanical evidence, on important law: parts that are highly developed in comparison to other allied species are very variable.</p><p style='text-align: justify;'>Interest in hairiness of alpine plants revived by reading A. Moquin-Tandon [<i>Éléments de tératologie végétale</i> (1841)]; correlation with dryness. CD seeks interpretation independent of direct environmental effect.</p>