Proportion of sexes in (new-born) lambs equal, but males more likely to die.
Showing 1–20 of 32 items
The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.
Proportion of sexes in (new-born) lambs equal, but males more likely to die.
Horned rams of Guinea sheep.
CD’s queries about expression are too difficult for him to answer.
Loss of juvenile colouring in South Down sheep.
List giving the numbers of Lepidoptera of different species reared in 1869 and the proportions of the sexes [see Descent 1: 313].
Discusses the bristling of hair in melancholics and the action of the platysma myoides muscle and the grief muscles in the insane.
Note on proportion of sexes born in sheep.
Will use new English edition [5th, of Origin] in preparing for [4th] German edition. Bronn’s translation of Origin in the title as "Entstehung" is not so precise as "Ursprung" would be. The publisher does not object to changing the title, but JVC is doubtful, because the Origin is so well known in Germany as Entstehung. Asks CD’s opinion.
Account of his Russian trip.
Glad JTM intends to write a paper. Discusses JTM’s research on Arbutus.
CD’s riding accident.
Ashamed that members of the Entomological Society have almost no information on sex ratio of bred insects in response to CD’s query of months ago. One exception, William Buckler, promises results. [See Descent 1: 313.]
Thanks for information about expression.
Comments on JC-B’s photographs of insane people.
Sends copy of Duchenne [see 6755].
Asks for further information about platysma, his bête noire for a year or two.
Observations on birds entering the country in spring. Some have clods of earth on their feet.
Frankfurt Zoological Garden has only male mandrill. Does CD want description? Antwerp garden may have a pair.
Sends CD a copy of his new book Sismopirologia [1869]. Is sending no other copy to England because his previous book was unacknowledged.
Statistics on proportion of sexes in lambs.
Carus will soon begin translating 5th ed. of Origin.
Sale of Variation is satisfying.
C. J. Dub will write popular work on CD’s theory.
Gustav Jäger has written on it [Die Darwin’sche Theorie und ihre Stellung zu Moral und Religion (1869)].
On the proportion of sexes in lambs.
On proportion of sexes in litters of dogs.
Proportion of sexes in lambs, before castration.
The house at Barmouth.
His poor health.
Bentham’s interesting Linnean Society Address ["On geographical biology", Proc. Linn. Soc. Lond. (1869): lxv–c].
CD particularly wishes to know how botanists agreed with zoologists on distribution.
Still thinks isolation more important in preserving old forms than Bentham is inclined to believe.