Showing 41–52 of 52 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.
Inquires whether penguin ducks can run faster than other kinds.
Hostile to Spencer’s application of natural selection to society.
JDH on J. E. Gray’s views on collecting.
JDH collecting Wedgwood ware.
CD interested in hybrid sterility and encloses his preliminary MS. Outlines experiments to test for existence of sterility in breeds of poultry and pigeons.
Experiments on dimorphism have led him to change in part his opinion as given in Origin, and he is now asking pigeon and poultry fanciers for any examples of special selective sterility [i.e., a particular pair are sterile when crossed, but each individual is fertile with others] and hopes to investigate its inheritance.
Returns Kingsley’s letter [see ML 1: 225 n.].
Lectures [to working men] would do good if widely circulated.
On sterility, they differ so much there is no use arguing. To get the degree of sterility THH expects in recently formed varieties seems to CD simply hopeless. Has suggested a test experiment to Tegetmeier [two fertile birds paired and unproductive].
Thanks for letter [missing] and help.
Asks about the effect said to be produced on the stock by a graft.
Health prevents accepting TR’s invitation.
Can WBT help get an answer to a query on ducks?
Has heard of a case of special sterility in cattle, in which a particular pair are sterile, but the individuals are both fertile with others.
Comments on items in the Saturday Review and the Edinburgh Review.
Has HF met with any cases of what gardeners call "sports" and what CD will call "bud-variations"?
Encloses maize seeds.
Has heard of a butterfly with pollinia of Platanthera stuck to it.
Comments on AG’s notes ["Dimorphism in the genitalia of flowers", Am. J. Sci. 2d ser. 34 (1862): 149–50].
"Precocious fertilisation".
Genera plantarum reviewed in Parthenon by a man who says JDH is disgraced by being "obviously tinged with Darwinism".
CD by chance has found that Saturday Review article [14 (1862): 589] on Duke of Argyll was written by his [CD’s] nephew, Henry Parker.
Asa Gray sends American newspapers which CD never reads.
Asks for any authentic cases of "sports", which CD calls "bud-variations". Flowers introduced from warmer temperate regions are said to be particularly apt to sport in this way.
CD now has proof that Cinchona is dimorphic and that some dimorphic plants are absolutely sterile with their own-form pollen.
Asks GHKT to examine or send pollen specimens of two Ceylon genera.
JDH’s impression on meeting [J. A.] Froud[e].
CD’s projected three volume work.
Complains at poor state of some [unspecified] plant collection.
