Orchid anatomy.
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Orchid anatomy.
Orchid homologies.
Sensitive responses in Catasetum.
Acropera becoming clear.
T. F. Jamieson impressed by JDH’s work on Himalayan glaciers.
Asks JDH to look at movement of labellum in an orchid.
Rostellum of Masdevallia.
JDH’s Fernando Po case.
Madeiran fauna pre-glacial according to Oswald Heer.
Orchid anatomy: homologies of column vascularisation.
Primula paper sent to Linnean Society.
CD fears he has misinterpreted vascularisation of butterfly orchid flowers.
Homologies of orchid flower vascularisation.
JDH’s letter on grounds of generalisation in plant morphology.
Faunal distribution and the glacial period.
Orchid homologies.
JDH asked to check Lindley on Acropera.
Transport of an orchid to Down.
Acropera species may be males of other orchids.
Homologies of ducts in orchids.
Went to British Museum to see Bates’s mimetic butterflies.