Argument, based on geographical distribution and competition, for a mundane glacial period rather than cooling of one longitudinal belt at a time.
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Argument, based on geographical distribution and competition, for a mundane glacial period rather than cooling of one longitudinal belt at a time.
Asks for information about JC’s essay, "On the relation of the domesticated animals to civilisation" [read at BAAS meeting 1859].
Will be pleased to review Asa Gray’s pamphlet [see 3068].
Is not surprised that blind cave insects are sometimes found in other dark places.
Invitation to Down for weekend with Huxley and W. B. Carpenter.
Asks for a testimonial for Edward Newman.
Discusses the Origin, considers natural selection works well when applied to the evolution of nations and groups of men; on the other hand feels the classification of mineral elements is a damaging analogy as it parallels organic classification but could not be derived by any evolutionary means.
Sends his paper ["Insect fauna of the Amazon valley", Trans. R. Entomol. Soc. Lond. 2d ser. 5 (1861): 223–8, 335–61].
Points out three areas of interest arising from the study of the species of Papilio: the derivation of the fauna, the variability of the species, and the permanence of local varieties.
Discusses J. S. Baly’s views on specific differences in reproductive organs [Catalogue of the Hispidae in the collection of the British Museum (1858)].
Henslow is dying.
H. W. Bates’s excellent article against glacial period [Trans. R. Entomol. Soc. Lond. 5 (1860): 352–3] leaves CD "dumbfounded".
H. C. Watson’s hostility.
Discusses specific varieties, especially geographic varieties.
Comments on the effects of the glacial age on the tropics.
Sexual selection.
CD will publish on Primula [Collected papers 2: 45–63]. Will DO ask W. H. Fitch to make woodcuts of "pin" and "non-pin" primroses [i.e., long-styled and short-styled forms]? Encloses a sketch.