Sends a list of 22 plants that grow at Hitcham and in the Azores and are, according to H. C. Watson, least likely to have been imported [by man]. Will pay the little girls of Hitcham liberally to collect the seeds for his experiments.
Notes on the comparative rarity of intermediate forms between species, and the varying relationships those forms may have to one or both species between which they are intermediate.
Comments on species with disjoined ranges; does not feel, despite CD's expectations, that they tend to belong to small families.
Gives the proportion of U. S. trees in which the sexes are separate [see Natural selection, p. 62].
CL's comments on Origin. Mentions corrections to last chapter suggested by CL.
Comments on lack of peculiar bird species on Madeira and Bermuda. Emphasises importance of American types in Galapagos.
Denies necessity of continued creation of primitive "Monads".
Denies need for new powers and any principle of improvement.
Discusses gradations of intellectual powers.
Adaptive inferiority and extinction of groups of species and genera.
Asserts that climate is less important than the struggle with other organisms.
Suggests an experiment involving primroses and cowslips.
The chapter on hybridisation.
Rudimentary organs.
Gives opinion of Lamarck's work.
Sends a correction for Origin reprint.
Sends copy of 2d ed. of Origin, with list of corrections.
Is at work on "fuller work" [Variation].
CD is glad there is to be an American edition of Origin printed from the corrected 2d English edition.
Has examined Leschenaultia and concludes the external viscid surfaces have nothing to do with the stigmatic surface. Agrees with CD's style and nectary conclusions; accounts for their form and position in irregular flowers by describing floral development.
[Enclosed are some queries by CD with answers by JDH. Gives information on seed setting by Mucuna
and an opinion on the abruptness of N. and S. limits of plant ranges.]
Has read Origin with pleasure.
Has performed many experiments which confirm his opinion that primrose, oxlip, and cowslip are three distinct species.
To understand Leschenaultia pollination CD requires field observations in the native country.
Has observed two forms of cowslips, which he calls male and female. The same two forms are found in primroses.
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