Summary

On F. M. Balfour.

Effects of ammonium carbonate on roots.

FM’s Pontederia case is very curious.

Summary

Has read and admires FM’s work on species.

Observations on Crustacea are good and original; asks FM to dissect and check some of CD’s observations on cirripedes.

Has sent "Climbing plants" paper [J. Proc. Linn. Soc. Lond. 9 (1865): 1–118] and would like to send Orchids.

Summary

FM’s view on meaning of two-coloured stamens in many flowers; CD has been looking through his old notes on dimorphism for supporting evidence. Intends to send extract of FM’s letter to Nature or to Linnean Society.

Summary

Thanks for observations on orchids.

FM’s paper on climbing plants [see 5146]; CD has received proofs.

Carl Claus’s pamphlet on copepods [Die Copepodenfauna von Nizza (1866)].

Summary

Structure of Scaevola and its fertilisation with insect aid.

Fertilisation of Aristolochia.

FM’s paper on climbing plants [see 5146].

Is preparing new edition of Origin.

Summary

Is sending FM’s two letters on climbing plants as a paper to the Linnean Society ["Notes on some of the climbing plants near Desterro, in south Brazil", J. Proc. Linn. Soc. Lond. (Bot.) 9 (1867): 344–9].

Adaptations for pollination in Catasetum.

Summary

Thanks for interesting letter on climbing plants.

FM’s view on Anelasma seems probable.

Difficulty quoted by FM from A. Agassiz on embryology of Echinodermata is quite beyond CD.

Summary

Fertilisation in orchids: Friedrich Hildebrand’s paper.

Self-sterility.

Climbing plants.

Agassiz’s attempts to eliminate all Darwinian views.

Summary

Thanks for information on sexual differences.

Orchids; self-sterility and difficulty of getting seeds to germinate.

Dimorphism.

Summary

Variation to be published at end of month.

Dimorphism and self-sterility.

Seed dissemination in Adenanthera.

Summary

Has forwarded FM’s MS to Max Schultze, but did not read it.

Movement of stem apex in Linum.

Haeckel’s paper on reproduction in certain Medusae.

Summary

Mimicry in Lepidoptera.

Sexual selection.

The Franco-Prussian war.

Summary

Self-sterility in orchids.

Growth differences in plants raised from self- and cross-fertilised seed.

Summary

Thanks for observations on dimorphic plants. Dimorphism prevalent in certain groups throughout the world.

Retarded fertilisation in certain orchids.

Summary

Thanks for information on orchids

and facts on coastal flora and fauna.

Asks FM to look out for dimorphic aquatic and marsh plants.

Has read pamphlets "in our favour" by Carl v. Nägeli and Oscar Schmidt.

Summary

Translation of Für Darwin has been published [Facts and arguments for Darwin (1869)].

Discusses dimorphic plants, commenting on FM’s observations on Oxalis.

Is greatly interested in Eschscholzia, which seems somewhat more self-sterile in Brazil than in England.

Thinks FM’s grass is "most wonderful".

Summary

Has read FM’s paper on sponges ["Über Darwinella aurea", Arch. Miskrosk. Anat. 1 (1865): 344–53] with interest.

Has also read FM’s work on the metamorphoses of Peneus [Ann. & Mag. Nat. Hist. 3d ser. 14 (1864): 104–15], an interesting and important embryological discovery.

CD regards Louis Agassiz’s opinions as valueless.

Summary

Reports reviews of Facts and arguments for Darwin [1869].

Is preparing for a French translation of Orchids.

The case of Abutilon which is sterile with some individuals is remarkable.

Has sent FM’s account of the monstrous Begonia to the Linnean Society.