Summary

Has been reading J. D. Morell’s new book on psychology [An introduction to mental philosophy, on the inductive method (1862)].

Progress of the Civil War.

Summary

Is sending first half of orchid book.

Feels he is wrong about Melastoma.

Summary

Has received first sheets of Orchids and is very impressed. "What a skill & genius you have for these researches."

Details of U. S. orchids.

Summary

Discusses heterostyly in Houstonia.

Summary

Thanks AG for praise of Orchids and his notes on several American species of orchid. Comments on AG’s observations.

Is experimenting [on dimorphism] with Rhexia and Melastoma.

Asks AG’s opinion of a paper by Thomas Meehan ["On the uniformity of relative characters between allied species of European and American trees", Proc. Philadelphia Acad. Nat. Sci. (1862): 10–13] which is the best case of the apparently direct action of the conditions of life CD has seen.

Requests postage stamp for his ill son [Leonard].

Thanks AG for observations on Cypripedium and gives recent observations of his own.

Arethusa is very pretty; structure seems like that of Vanilla.

Finds the little (so-called imperfect) flowers of Viola and Oxalis curious: the pollen-grains emit their tubes whilst within the anthers, and they travel in straight lines right to the stigmas.

Sympathises with events in the U. S.

Reports on French translation of Origin by Mlle C. Royer, "one of the cleverest & oddest women in Europe".

Alphonse de Candolle says he wants direct proof of natural selection; "he will have to wait a long time for that".

Summary

Has not had time to look at Rhexia.

Progress of Civil War.

Summary

Thanks for notes on Cypripedium and Platanthera hookeri, which is really beautiful and quite a new case.

His son, George, has been observing the insect fertilisation of orchids.

CD has been crossing peloric flowers of Pelargonium, but doubts he will get good results with respect to sterility of hybrids.

Rhexia glandulosa does not appear to be dimorphic. Lythrum is trimorphic.

Summary

Discusses dimorphic plants and the occurrence of "precocious fertilisation" in the bud.

Gives some comments on design in nature in the light of the translator’s commentary in the French edition of the Origin.

Reports the recent events of the Civil War.

[Note on verso of envelope:] Utricularia vulgaris is "about as neatly contrived for cross-fertilisation by insects as almost any orchid".

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

Observations on Platanthera.

Possibility of trimorphism in Mertensia.

Summary

Encloses stamps for Leonard Darwin.

Summary

AG’s orchid observations are admirable.

Owen has lectured on birds’ descending from one form.

French criticism of CD’s Primula paper.

Only AG has seen that Orchids was "a ""flank movement"" on the enemy".

Summary

AG’s "capital" review of Orchids [Am. J. Sci. 2d ser. 34 (1862): 138–44].

Thinks there are three forms of Lythrum salicaria.

Discusses transport of seeds by sea.

Summary

Is observing Gymnadenia tridentata.

Has received six copies of Orchids.

Summary

Gives J. T. Rothrock’s observations on the structure and fertility of the two forms of Houstonia. Mentions his own observations on Rhexia virginica and Gymnadenia tridentata.

Summary

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

Summary

Notes and observations on orchids.

Summary

Emma and Leonard have scarlet fever.

Houstonia seems "a grand case"; J. T. Rothrock should publish his observations on the two pollens and the reciprocal action of two hermaphrodites.

Rhexia glandulosa offers nothing odd, but Heterocentron will turn out something marvellous like Lythrum.

Would like to know what AG thinks of last chapter of Orchids.

Summary

Glad AG will publish some separate notes on orchids ["Fertilization of orchids through the agency of insects", Am. J. Sci. 2d ser. 34 (1862): 420–9].

Trimorphism in Lythrum.

Bee behaviour.

Summary

Suggests CD try to get Lythrum hyssopifolia from France.

Dimorphic flowers.

Differences between newly opened and older orchids.

Flowers of Spiranthes and Goodyera.