Gives an extract from his notes on Marcgravia umbellata, an epiphyte that might be the plant that Bates refers to as matador.
Gives an extract from his notes on Marcgravia umbellata, an epiphyte that might be the plant that Bates refers to as matador.
Sends CD a paper ["Ant-agency in plant structure", published in Spruce Notes of a botanist on the Amazon and Andes, ed. A. R. Wallace (1908)] on plant structures he believes are the work of insects; asks him to forward it to the Linnean Society [read 15 Apr 1869].
Writes of his support for the Origin, before which he had been much concerned by the delimitation of so-called species.
RS’s facts are remarkable. A year or two ago CD would not have believed ants could produce an inherited effect, but he has "lately come to believe rather more in inherited mutilations". However, CD is not satisfied that the sacs are inherited and urges RS to produce any other evidence he might have.
Describes the floral structure and fertilisation of some melastomes;
discusses the direct agency of insects in modifying the structure of flowers.
Notes on various instances of dimorphic stamens.