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

Enquiring about cleistogamic flowers of Oxalis.

Summary

Discusses the cleistogamous flowers of Oxalis. Thinks they may not be truly cleistogamous but merely arrested or imperfectly developed normal flowers.

Summary

Discusses possible cleistogamic flowers in Oxalis.

Summary

Thanks for Forms of flowers.

Alexander Dickson would like to know whether anyone has described the epidermal cells lining the pitcher of Cephalotus.

Summary

Envelope containing specimens (apparently mentioned in the letter from Daniel Oliver 27 February 1863 (S 4015)).

Summary

Extracts from botanical literature dealing with Dionaea, intercrossing, and sensitivity. [Bot. Ztg. (1833): 96; Thomas Nuttall, Genera of N. American plants (1818)].

Summary

Thanks for mentioning J. G. Kurr on nectaries [Untersuchungen über die Bedeutung der Nektarien in den Blumen (1833)]. Requests observations on flowers with curved pistils. Finds they curve toward nectary, thus lying in path of insect.

Summary

Requests observations on Drosera and Dionaea,

and asks DO to look up Buchanan and Wight on insectivorous plants ["Conspectus of Indian Utricularia", Hooker’s J. Bot. 1 (1849): 372–4].

Summary

Cites descriptions of melastomads in C. V. Naudin, Annales des Sciences Naturelles 3d ser., vols. 12–18.

Summary

Thanks for reference to Annales des Sciences Naturelles.

Requests DO observe rate at which Australian Drosera closes.

On detection of nitrogen in organic fluids.

Summary

CD’s observations on preference of Drosera for milk and nitrogenous fluids, and the effect of nitrate of ammonia are interesting. Asks whether CD is satisfied that the effect is not due to density of fluid or to a chemical irritant. His own observations suggest such possibilities.

Summary

Lists of nitrogenous organic fluids that produce contraction in Drosera, and details of how to reproduce results.

Summary

Sends address.

Summary

His results with pure gum on Drosera spathulata entirely support CD’s opinion. Other observations on insectivorous plants.

Summary

Delighted to try experiments on Drosera spathulata.

Summary

A poser: carbonate of soda produces inflection rather than contraction in Drosera. Possible solution: glands at end of hairs absorb as well as secrete. Fascinated by currents in cells after inflection.

Summary

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.

Summary

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

Summary

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]?