Identifies a plant.

CD will not find Hermann Schacht’s Lehrbuch [der Anatomie und Physiologie der Gewächse (1856–9)] at the Linnean Society Library.

Arrangements for obtaining Carl Nägeli a set of British Hieracium specimens.

Notes on the taxonomy of Primula.

DO thinks an essay [Alexander Braun’s "Rejuvenescence", Ray Society (1853)] is not worth reading with respect to some difficulty concerning phyllotaxy.

Sends specimens of Byblis, Roridula, and Utricularia for CD’s examination.

Sends information about Indian and Australian species of Aldrovanda, Roridula, and Byblis.

Sends Utricularia montana and Byblis species.

Drosera census numbers 100 species.

Genlisea distinguished from Utricularia.

Sends capsules with results from Genlisea specimens and fragments of Polypompholyx.

The generic name Genlisea must be preserved for Utriculariaceae with five-part calyces.

Finds no trace of nectar in Stanhopea saccata.

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].

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.

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].

Thanks for reference to Annales des Sciences Naturelles.

Requests DO observe rate at which Australian Drosera closes.

On detection of nitrogen in organic fluids.

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

Delighted to try experiments on Drosera spathulata.

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.

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.

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

Has examined nearly all British orchids.

Hooker’s error on Listera.

Change in colour and consistency of Drosera hair glands after leaf inflection. Analogous structures in Dionaea. Requests Oliver confirm these observations on live plants, of which he has none.

In a muddle over the effects of salts on insectivorous plants.