Darwin-Hooker Letters : Letter from C. R. Darwin to J. D. Hooker 25 November [1861]
Darwin, Charles Robert
Darwin-Hooker Letters
<p style='text-align: justify;'><i>Acropera</i> species may be males of other orchids.</p><p style='text-align: justify;'>Homologies of ducts in orchids.</p><p style='text-align: justify;'>Went to British Museum to see Bates’s mimetic butterflies.</p>