Summary

ARW’s view of migration of plants from mountain to mountain gains support from case described in Nature [23 (1880): 125–6] by J. G. Baker. Identical species of alpine plants found in African mountains and Madagascar.

Summary

Outlines the ranges of northern U. S. species common to Europe. Hopes to investigate the resemblances between the floras of the north-eastern U. S. and western Europe. Discusses routes by which alpine plants appear to have reached U. S.

Summary

JDH criticises C. J. F. Bunbury’s paper on Madeira [J. Linn. Soc. Lond. (Bot.) 1 (1857): 1–35].

Absence of Ophrys on Madeira suggests to JDH a sequence in creation of groups.

Why are flightless insects common in desert?

Australian endemism.

Summary

Discusses works lent him by CD: Candolle, Kerner, Braun, Sachs, and CD’s own notes on relative positions of leaves. Plans paper on subject for Royal Society.

Just appointed medical inspector under local government board.

Summary

JDH criticises John Ball’s theory of origin of higher plants in Carboniferous highlands, where low carbon dioxide levels permitted survival.

Summary

Answers CD’s query on Primula longiflora and P. scotica.

Would like abstract of CD’s paper ["Two forms of Linum", Collected papers 2: 93–105] for Natural History Review.

Summary

American edition of Origin. AG’s assessment of the book’s weak and strong points. Suggests Jeffries Wyman would be a useful source of facts and hints for CD.

Summary

JVC proposes to correct Bronn’s mistakes [in his translation of Origin], but will not add his own notes.

Asks CD to write a note on Nägeli’s pamphlet [Entstehung und Begriff] for the revised edition.

Also requests biographical information for an encyclopedia article he has been asked to write.

Summary

Thanks for letter, in which CD cited [Anton] Kerner’s alpine observations.

Describes with diagrams the curious disposition of leaves on some Acacia twigs, and points out that his theory should account for these anomalies as well as normal cases.

Summary

Expects R. Caspary’s paper to be published soon.

Reports the conclusions of another of RC’s papers on the movement of tree branches due to cold [Bull. Congr. Int. Bot. & Hortic. Lond. (1866): 98–117]

and discusses a paper by H. Lecoq on the mountain flora of the Auvergne [Proc. Bot. Congr. (1866): 158–65]. He disagrees with CD on glaciation and its effect on geographical distribution.

Summary

Encourages CD’s work in vegetable physiology.

Ascending the Lebanon JDH noted limits of plant distribution as CD requested: lower limits of a genus sharper than upper. Sharpness of boundaries related to a plant’s moisture requirement.

Impressed by "sporadic" distribution at the Jardin des Plantes in Paris.

Summary

Questions for his lecture on "Insular floras".

Comments on CD’s criticism of Atlantis. Has no fixed opinion on continental extensions. Great objections to hypotheses of CD and Forbes: botanical to CD’s; geological to Forbes’s. Will point out that natural selection is necessary to both hypotheses.

Summary

Questions CD’s view in Variation that Torfschwein formerly ranged from Europe to China.

Cites numerous German publications relating to CD’s theory.

Summary

Remarks on geographical divisions of the flora of the Southern Hemisphere.

JDH beginning Galapagos plants. Value of studying insular floras with respect to inquiries about adaptation of species.

Summary

Answers CD’s queries arising from Flora Antarctica.

Would like CD to come to town and go over Galapagos plants with him.

Summary

Previous letter [missing] on Edinburgh position was ill-tempered. Friends assure him that he ought to be thankful for opportunity to try for professorship.

Reports meeting with Humboldt in Paris.

Summary

Discusses the research for his paper on Arctic plant beds in the freshwater aquifers of Scania (Nathorst 1872).

Summary

Has filled up CD’s paper [see 1674].

Distribution and relationships of alpine flora in U. S.

Summary

CD’s tabulation of colonists curious but explicable.

Working on Tasmanian flora; contemplating general essay on Australian distribution: Tasmania and Australia same alpine species; Swan River flora very peculiar and quite distinct from New South Wales.

Trying to establish new journal at Linnean.

Summary

JDH’s arguments against transmutation: 1. Plants do not show the confusion he would expect; 2. Under clearly similar physical conditions we do not find same species.

JDH’s argument against migration: commonality of alpine species. Believes migration opposes facts of botanical distribution in Van Diemen’s Land and New Zealand; prefers continental extension theory.