Summary

Compliments DO on his wealth of information.

Henrietta’s relapse.

Thanks for extract on Drosera.

Summary

Ferdinand Cohn has already sent a copy of his article, [possibly: "Über die Function der Blasen von Aldrovanda und Utricularia", Beitr. Biol. Pflanz. 1 (1870–5) pt 3: 71–89].

Summary

Delighted to try experiments on Drosera spathulata.

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CD never dreamed primroses did not abound with DO; apologises for trouble and sends flowers.

Will repay DO for cost of Cypripedium and for the Dionaea, if any can be got.

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Congratulations on DO’s marriage.

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Thanks for correcting Fritz Miller’s paper on climbing plants. CD will send it to Linnean Society.

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Thanks for the information about the action of roots on rocks.

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Wants to amend request [see 2946] if DO wants to try carbonate of ammonia experiment. Put third drop on midrib of leaf [of Dionaea] or inside upper side.

Sorry DO already has Origin. Would he like Journal of Travels [Journal of researches]?

Summary

Requests Oxalis acetosella, which he suspects is dimorphic.

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Thanks for Oxalis. Only experimentation will show whether disproportion of long- to short-styled flowers is a functional dimorphism.

Case of aestival flowers is very curious.

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Thanks for information on Primula ovules. From what DO says the pollen-tubes ought to find their way to the micropyle.

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Recommends Wyman’s short notice ["Report on Dr Jeffries Wyman’s experiment on the cause of contractility in vegetable tissues"] in the Proceedings of the American Academy of Arts and Sciences 3 (1852–7): 167.

Summary

Thanks him for specimens.

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Has been copying out references from Natural History Review [possibly D. Oliver, "The structure of the stem in dicotyledons; being references to the literature of the subject", Nat. Hist. Rev. n.s. 2 (1862): 298–329].

Suggests DO study high incidence of separate sexes in freshwater plants.

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Sends address.

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Requests Dionaea now that he knows Drosera so well. Wants to compare fluids secreted; in Drosera they are acid and have antiseptic effect on meat.

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Requests DO apply carbonate of ammonia to sensitive hair of Dionaea and measure reaction time. Wants to compare Drosera and Dionaea.

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The best way to see cell movement in Drosera hair, is to cut off those lately inflected over a fly, sketch shape of red matter under high power, and repeat after one or two minutes.

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Requests date of [C. S.] Rafinesque[-Schmaltz], New flora of North America, pt 1 [1836].

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Asks DO to look for nectar in Stanhopea saccata labellum. CD’s theory predicts nectar should be present, but afraid there is none.