Answer to CD’s query as to whether horns on deer are for use or ornament. [See Descent 2: 252–3.]
Showing 41–60 of 533 items
Answer to CD’s query as to whether horns on deer are for use or ornament. [See Descent 2: 252–3.]
Does not fact that characters important in systematics are often of no use, corroborate CD’s view that such characters, if not detrimental, may persist ad infinitum?
Social news.
On development of horns in fawns of fallow deer.
Believes Portuguese habit of removing tails of pointers is responsible for birth of some tailless dogs.
Thanks JP for his book Vesuvius [1869].
Thanks CC for two memoirs [see 6575. The other was possibly "Die Cypris-ähnliche Larve der Cirripedien", Schr. Ges. Beförd Naturw. Marburg (1869)].
Haeckel is too enthusiastic and too bold in drawing conclusions.
CD sees no reason to add to what he says on isolation, in new edition of Origin.
Lists specimens he has available for CC’s intended study of metamorphoses of Lepas.
DF’s opinion of Gustav Jenzsch’s book [Mikroskopische Flora und Fauna (1868)]. Encloses extract of a letter from Ferdinand Zirkel also mentioning Jenzsch’s work.
Argues that [general variability] of species, not single variations or sports, is basis for modification and adaptation to new conditions.
No summary available.
Returns book with thanks. "Joyfully accepts" idea of the warming of Southern Hemisphere during glacial period in the Northern. Lyell is unwilling.
Mentions H. N. Moseley’s study of descent of glaciers [Proc. R. Soc. Lond. 17 (1869): 202–8].
CD greatly troubled by problem of age of the earth and calculations of Sir William Thomson. Asks about changes in the form of the globe.
Requests authorisation to translate Journal of researches into French.
"You are most perfectly welcome to Fragmenta [F. J. H. von Mueller Fragmenta phytographiae Australiae (1858–64)], & I shall be delighted if they are of the slightest use to you."
Asks JM to grant permission for a French translation of his "Naturalist’s voyage" [Journal of researches].
A case of fighting in crabs (Portunus puber against Carcinus maenas) [see Descent 1: 332].
Corrects T. M. Brewer’s statement, cited in the Origin, that the American cuckoo never uses other birds’ nests. [See Origin, 5th ed., p. 266.]
Statement of sum due from Rev. Robinson "On account of School".
Sends translation of Mr Steiger’s letter responding to question CD had asked about growth of horns of merino rams.
No summary available.
Lyell says CD is revising what he says about the Weald in the Origin. Asks CD to look at his subaerial denudation views in his book [Physical geology and geography of Great Britain, 2d ed. (1864)].
Discusses case of tailless dogs.
Does not intend to follow up work on variation under domestication.
Asks for specimen of Drosophyllum from Portugal.