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Showing 81–100 of 235 items
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[On Antiquity of man] CD is "convinced that at times … you have … given up immutability". "A clear expression from you, if you could have given it, would have been potent with the public."
Objects to CL’s description of CD’s view "as a modification of Lamarck’s doctrine". Quotes Henrietta [Darwin]’s observations on this description.
Comments on CL’s controversy with Owen concerning the human brain.
The controversy between Falconer and CL.
The "wretched" review of CL [Antiquity of man, Athenæum 14 Feb 1863, pp. 219–21] and Huxley [Man’s place in nature].
Lyell’s position on mutability.
Fertilisation of trees by bees.
TWW should look at bee and comb specimens received by CD from Africa.
Thanks Academy on his election as a Corresponding Member.
If WDF should hear what ram was put to the ewes, CD would like to add it [see Variation 2: 30].
Will add "cautiously" that WDF believes white and slate muscovy ducks breed true [Variation 2: 40].
His better opinion [of work of Boucher de Perthes].
Explains his position on CL’s treatment of species.
Mentions positive response to his ideas on the part of a German professor [Ernst Haeckel], Alphonse de Candolle, and a botanical palaeontologist [Gaston de Saporta].
Notes negative reaction of entomologists.
Mentions Falconer’s objections [to Antiquity].
Mentions work of Hooker.
Comments on paper by Owen ["On the aye-aye", Rep. BAAS 32 (1862) pt 2: 114–16]
and CD’s review of Bates’s paper [Collected papers 2: 87–92].
Thinks Natural History Review is excellent.
Lyell’s Antiquity of man lacks originality.
Statements in Lyell provoke CD to determine exact publication date of Origin and JDH’s introductory essay [to Flora Tasmaniae].
CD now believes in repeated periods of global cooling and migration.
Thanks for the artificial comb.
Having trouble understanding laws of phyllotaxy in order to grasp Hugh Falconer’s objections.
L. C. Treviranus on Primula [see 3980] misses the "prettiness" of the adaptations.
John Scott says P. scotica is never dimorphic.
Discusses the meaning of C. K. Sprengel’s term "dichogamy". Dichogamous plants are functionally monoecious; Primula is functionally dioecious.
Reports Hermann Crüger’s observations of Cattleya and of bees pollinating Catasetum. Crüger will observe Melastomataceae.
Has built a hothouse.
Fears Amsinckia cannot be dimorphic.
Ill health slows his work on Variation.
Thanks WDF for authentic details of number and colour of lambs [Variation 2: 30].
Complains of his eczema.
Encloses a dialogue on species from a New Zealand newspaper [S. Butler’s First dialogue on evolution, from the Christchurch Press].
Observation on morphology of Primula ovarium sent for DO’s use.
Enthusiastic about JS’s work on Passiflora self-incompatibility.
CD quotes JS on rostellar pollen germination [in "Fertilisation of orchids", Collected papers 2: 77–8]. H. Crüger attributes it to ants’ carrying stigmatic secretion to pollen.
Homomorphic cowslip seedlings are, sadly, showing variation.
CD’s opinion of Lyell’s Antiquity of man.
Geographical distribution during and between glacial periods.
Latent characters and reversion.
Nectar secretion in Edwardsia. Could the stamen protect stigma?
Sends monstrous Primula with three pistils.
Had never heard of Robert Caspary, but what DO thinks is the placenta could be a whorl of pistils without stigmas.
CD regrets he used "creation" in Origin when he meant "appeared".
An Oken-like article in "Owenian style" in Athenæum.
Tropical plants continue to be troublesome.
Thanks GHKT for specimens of Sethia. Discusses functions of their dimorphism for insect fertilisation.
Discusses polymorphism and fertilisation in Lythraceae.
Asks for seed of Limnanthemum.
Describes his interest in galls.
Discusses curious specimens of Gomphia and Lesemia.
Reports the observations of Hermann Crüger and John Scott that fruit is set by orchids whose flowers never open and that pollen-tubes are emitted from pollen-masses still in their proper position. These cases convince CD that in Orchids he underestimated the power of tropical orchids to produce seed without insect aid but he is not shaken in his belief that the structure of the flowers is mainly related to insect agency.