Shrewsbury news.
Glad he likes Edinburgh.
They have been going to plays performed by a travelling company he knows.
Asks about CL's new book [Travels in North America (1845)].
Discusses views of A. D. d'Orbigny on elevation.
Mentions reading W. H. Prescott [History of the conquest of Mexico (1843)].
Response to Origin. Praise for summary of chapter 10 and chapter 11.
The dissimilarity of African and American species is 'necessary result of "Creation" adapting new species to the pre-existing ones. Granting this unknown & if you please miraculous power acting'.
C. T. Gaudin writes of Oswald Heer's finding many species common between Miocene floras of Iceland and Switzerland. Interesting for CD's migration theory.
Evidence of tropical floras continuous since Tertiary cannot fit CD's position on intermittent cold periods.
Agrees with CD on reversion and latency.
Did not think anyone would notice case of Lathyrus.
Recalls reading correspondent's paper on great fir woods of Hampshire.
Thanks for photograph.
Notes headed "Observations on the expression of the emotions".
Thanks to CD's help Zoological Station has passed a crisis and is now flourishing.
Is writing pamphlet on "the origin of vertebrates and the principle of succession of functions" [see 9991 and 10003]. It is likely CD will not be pleased with it, but he thinks he must now, after seven years, bring it out. Seeks to open the way for a new series of theoretical questions.
JDH recounts discussion at Royal Society over Günther's paper on distribution and affinities of gigantic tortoises ["Description of the living and extinct races of gigantic land-tortoises, Parts III and IV", Proc. R. Soc. Lond. 25 (1876-7): 506-7]. Huxley suggests they are Miocene relics.
Royal Society will publish Frank's Dipsacus paper [but see 10971 and 11073].
Thiselton-Dyer will review Cross and self-fertilisation.
On instinct in insects. Intends to experiment as CD proposes.
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