Showing 1–20 of 25 items
Gives some observations on orchids and on some plants which seem to be dichogamous.
No summary available.
No summary available.
Encloses feathers from a diseased hen which has assumed cock plumage.
Forwards proofs of the engravings for Variation.
Has read abstract of JL’s paper ["On the present state of archaeological science", Athenæum 21 July 1866, pp. 79–82] and praises it.
Answers JDH’s questions on connection of SE. England and continent,
on the effect of breaking the Isthmus of Panama,
and on Madeira flora as remnant of Tertiary flora.
Cautionary remarks for JDH on his "Insular floras" speech, designed to strengthen case of "occasional migration" theory.
Sends packet of Ononis columnae seed and references to the species.
Alexander Beatson mentions a bird in considerable numbers on St Helena which appears to contradict CD’s statement in Journal of researches that only introduced land birds exist there.
The Azores flora and fauna tell heavily against Atlantis joining them with America and against transoceanic migration from America.
Returns Primula paper [Collected papers 2: 45–63].
Alterations to the woodcuts of poultry for Variation.
CD defends his view of land birds on St Helena.
Explains why he would not expect American plants on the Azores.
It makes him miserable that he and JDH look at everything so differently.
Will do justice to CD’s objections to continental extension theory.
CD misunderstood his question about Isthmus.
Responds to CD’s other points about Madeira and the Azores.
Is attempting to sum up the two theories impartially and must raise all the difficulties with each. More on his differences with CD.
Appleton’s will not print a new edition of Origin.
AG has read sheets of new English edition [4th] and is much pleased by the passage on Richard Owen in the historical sketch.
Admits that occasional transport is not a well-established hypothesis but believes it more probable than continental extension as an explanation for the stocking of islands.
Notes on examining Rhamnus Frangula
More on continental extension vs transport [or migration] hypothesis. New questions raised. On Madeira, why were insects and plants changed so much, birds hardly at all?
Erratic boulders of the Azores.
Will be glad to see JDH at Down.
Hopes to arrive with MS of "Insular floras" on Saturday.
Returns two volumes of Felix Holt [George Eliot (1866)]
and the Coddington [lens].
John Smith will send Drosera.
Nation reports that Louis Agassiz holds that the Amazon Valley was formed since the glacial epoch.
