Summary

Is slowly writing Lythrum paper [Collected papers 2: 106–31].

Thanks for [Charles?] Wright’s observations on orchids

– could he note what attracts insects to Begonia and Melastoma? H. Crüger, who was going to observe Melastomataceae, has died.

Describes the climbing habits of Bignonia capreolata and Eccremocarpus scaber.

How does AG know the perfect flowers of Voandzeia are quite sterile?

He has a case of dimorphism in holly; asks AG to report on American hollies.

Summary

Has finished Climbing plants;

resuming work on Variation.

Sends abstract of John Scott’s paper [see 4332].

Has received review of Herbert Spencer but cannot believe AG wrote it unless he has muddled his brains with metaphysics.

Summary

Has not worked for six months due to illness.

Has been looking at climbing plants.

Hermann Crüger’s paper shows that CD was right about Catasetum pollination. Crüger’s account of pollination of Coryanthes "beats everything".

Summary

Sends question [missing] for an ornithologist.

Is plodding on at Variation.

Has added to Climbing plants.

Summary

Describes the flower and mode of action of a particular orchid.

Has been examining Spiranthes and is experimenting to see whether insects are necessary for its fertilisation.

It seems that Oncidium is designed so as not to be fertilised.

Summary

Congratulates AG on the "grand news of Richmond".

Still interested in dimorphism and would welcome new cases.

Working on Variation

and correcting proofs of Climbing plants.

Would like seed of AG’s dimorphic Plantago.

Cannot understand how the wind could fertilise reciprocally dimorphic flowers.

Summary

AG’s article on climbing plants [Am. J. Sci. 2d ser. 40 (1865): 273–82] is admirable and complimentary.

Reports Fritz Müller’s observations on climbers.

Experiments on dimorphism with Mitchella and Pulmonaria.

Summary

Gratified by AG’s praise of "Climbing plants".

Thanks for Specularia seed.

Summary

AG’s second article on Climbing plants [Am. J. Sci. 2d ser. 41 (1866): 125–30].

Fritz Müller’s observations on Rubiaceae.

New edition [4th] of Origin.

Summary

Thanks AG for references about phyllotaxy

and information on marriage laws.

Has been looking for dimorphism in Phlox and Euonymus.

Has observed the irritability of tendrils of Echinocystis with great interest. Was also struck by the rotating movements of the leading shoots, which he proposes to investigate.

Summary

Thanks for AG’s review of Forms of flowers [Am. J. Sci. 3d ser. 15 (1878): 67–73].

Thomas Carlyle’s letter about CD was a forgery.

Gives Hermann Müller’s observations on Valeriana dioica.

Is unsure about function of "bloom"; are glaucous plants more or less common in arid parts of U. S.?

Observations on heliotropism.

Thomas Meehan reports that Linum perenne is self-fertile; CD thinks that he has mistaken the species.

Summary

Believes Lythrum is trimorphic. Asks AG for seeds of plants he suspects are polymorphic.

Summary

Dimorphism: "new cases are tumbling in almost daily".

U. S. politics.

Summary

Discusses AG’s article ["Dimorphism", Am. J. Sci. 2d ser. 34 (1862): 419–20]. Does not like the terms "dioecio-dimorphism" or "precocious fertilisation". Discusses the separation of sexes in plants; cannot doubt that hermaphroditism is the aboriginal state.

Discusses AG’s observations on orchids and his review of Orchids [Am. J. Sci. 2d ser. 34 (1862): 138–51].

Summary

Thanks AG for Cypripedium and Mitchella.

Plans to investigate pollination of Cypripedium.

Has finished Linum paper [Collected papers 2: 93–105].

Would welcome facts on "bud-variations".

Hears that Cinchona is dimorphic.

Summary

Wants seeds of Nesaea verticillata for crossing experiments to see whether seedlings from "illegitimate unions" are sterile like true hybrids.

Summary

Thanks AG for his trouble about expression queries; wishes he had thought earlier of having them printed.

Is "plodding on" correcting Variation

and getting "a little amusement" from plant experiments. Oxalis is trimorphic like Lythrum.

Is continuing his experiments on seedling vigour.

Has heard hybrid potatoes can be produced by joining halves of different tubers.

Summary

Thanks for AG’s reviews [of Movement in plants] in the Journal and Nation [Am. J. Sci. 3d ser. 21 (1881): 245–9 and Nation 32 (1881): 17–18], especially for AG’s comment about Frank Darwin.

Summary

Adaptations of orchid flowers. Believes the structure of all irregular flowers is adaptation to insect fertilisation.

Linum grandiflorum distinguishes its own pollen so that when placed on stigma of same flower the pollen-tube is not even exserted.

Summary

Recommends Lyell’s book [Antiquity of man (1863)].

Quotes praise of AG’s pamphlet [see 2938].

Comments on U. S. politics.