Summary

Replies to a reviewer’s statement, that any theory of descent will connect large classes of facts, by pointing out that no other explanation has been as satisfactory as natural selection. But whatever view is adopted "signifies extremely little in comparison with the admission that species have descended from other species and have not been created immutable".

Summary

Impressed by JS’s attempts to fertilise Gongora.

CD has large collection of notes on orchids, but does not know when he will publish on them again.

Asks for JS’s papers on sterility of individual orchids and on Drosera.

Summary

Discusses dimorphic plants.

Summary

Falconer’s letter [attacking CL, Athenæum 4 Apr 1863, pp. 459–60] is most unjust.

Regrets his letter [to Athenæum, on heterogeny] now criticised by Owen.

Comments on article by Samuel Haughton [On the form of cells made by wasps – with an appendix on the origin of species (1863)].

Mentions forthcoming reviews by Asa Gray [in Am. J. Sci.].

Summary

Has pleasure in giving GS a testimonial for the office of surveyor for the Bromley District.

Summary

Lists the six honest believers in his species theory in England.

Asa Gray complains that Lyell acts like a judge on species, whereas CD complains of Lyell’s indecision.

CD working on divergence of leaves.

Distribution of Cameroon plants and the glacial theory.

Survival of island relics.

Summary

Doubts the fruit will stick on his Chinese double peach and asks TR to send him a couple when ripe.

Would like to grow seeds of the "curious monstrosity" of a wall-flower, to see whether the monstrosity is hereditary.

Summary

Thanks WED for his botanical specimens and observations.

Discusses Corydalis and the fertilisation of Fumariaceae.

Summary

CD despairs when men like AG and Lyell consider themselves incapable of judging on change of species by descent.

Is confused over phyllotaxy.

Has been looking at Plantago lanceolata.

Summary

At the suggestion of J. D. Hooker CD offers his opinion on the value of a proposed collection to be made at the Galápagos. The display would not be attractive or appealing to amateurs in natural history, but the scientific value of good collections of every species would be very great if those of each island are rigorously kept separate.

Summary

Believes GM’s human bones from Gibraltar must be of very doubtful age. Lyell agrees, but feels any skull found should be forwarded to George Busk or Hugh Falconer.

Suggests GM look carefully for shells in the drift.

Summary

Thanks WHF for photographs [of niata ox skull]. Will tell Quatrefages de Bréau about the cast. May have the photographs copied for woodcuts to illustrate his book on variation under domestication.

Summary

Asks to borrow J. J. Audubon [Ornithological biography (1831–9)].

Summary

The [genealogical] table seems excellent. Would be obliged for any further information about the children of the cousins – the case surprises CD.

Summary

Thanks for maps.

George [Darwin] failed at St John’s [College, Cambridge] and will stay another year at school.

Summary

Thanks for drawing and note about peach–nectarine.

Summary

Is sending photographs of the niata skull [requested in 4082]. W. H. Flower reports that he could have a cast made for £3.3s.0d.

Summary

The Lyell–Falconer squabble.

Discusses island vs continental floras and their degree of modification.

Critical of Wallace.

CD’s observations on phyllotaxy.

Summary

Natural selection implies that a form remains unaltered unless an alteration is to its benefit. This is not inconsistent with some forms remaining stable for long periods. Natural selection must at present be grounded entirely on general considerations. Of details we are still greatly ignorant.

Summary

CD has drawn up a paper from RT’s orchid notes on the fertilisation of Disa grandiflora for the Linnean Society [J. Linn. Soc. Lond. (Bot.) 7 (1863): 144–7].

CD would welcome seeds of any Cape Oxalis for his investigation of dimorphism.