Showing 1–15 of 15 items
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.
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.
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.
No summary available.
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.
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.
No summary available.
This is a second letter sent on the same day by Joseph Hooker to Sir Henry Barkly.
BAAS lecture on "Insular floras" [see 5135] went well.
Pleased by JDH’s success. JDH gives argument for occasional transport with perfect fairness.
W. R. Grove’s address [see 5201] good, but is disappointed that species part was so general.
