Thanks for CD’s offer of assistance after flood damage.

Comments on Movement in plants. Discusses sleep movements and paraheliotropism of Maranta and other plants.

Describes the fertilisation of figs by Hymenoptera.

Describes variability in the stamens and pollen of Lagerstroemia, which CD spoke of in Forms of flowers.

Also reports on similar phenomena in Pontederiacea (Heteranthera reniformis).

Has received from Paul Mayer an interesting paper on metamorphosis in Palaemonetes varians, which is also being studied by J. E. V. Boas in Denmark. Shows differences between larval development in Danish forms and those found in southern Italy.

CD interested by FM’s facts on movement of plants; has sent some to Nature ["Movement of leaves", Collected papers 2: 228–9]. Greatly admires FM’s work. Suggests an experiment to investigate movement in Phyllanthus.

In his last letter FM told CD about four flowers of Lagerstroemia that he had fertilised with the yellow pollen of another variety or species and which had subsequently fallen off. He has now repeated the experiment using the yellow pollen of a different variety and successfully produced good fruit as large as that fertilised with green pollen.

FM’s view on meaning of two-coloured stamens in many flowers; CD has been looking through his old notes on dimorphism for supporting evidence. Intends to send extract of FM’s letter to Nature or to Linnean Society.

Earthworm book with printer.

Has sent FM’s observations on paraheliotropism to Nature ["Movement of leaves", Collected papers 2: 228–9].

Plants with differently coloured anthers.

Intends gathering together his notes on "bloom".

Has just received CD’s letter of 12 April [13113]. To answer CD’s query, Heteranthera reniformis is an amphibious plant that grows as well on moist ground as it does in ditches filled with water.

For the past few weeks has been observing Phyllanthus plants that had shown the irregular movement in leaves returning from the positions assumed at night, but none has repeated the irregularity. Perhaps the progeny from the seeds he has collected will inherit the tendency for irregular movement.

Describes his observations of the power of movement in Cassia, Desmodium, and a few other plants.

Paul Mayer has identified seven new species of insects FM found in nine different species of figs.

Wants seeds of heterostyled plants to test fertility of illegitimate seedlings.

Offers £100 to FM to replace books lost in flooding.

Movement of plants to shake off water: FM’s invaluable observations.

Inquires about "bloom" on leaves.

Fertilisation of Melastomataceae, roles of the two sets of anthers.

Thanks CD for his letter of 21 June [13212].

Is sending seeds of Oxalis sepium, which came from a cross between a plant with long pistils and another with pistils intermediate in length. Perhaps some of the plants that come from them will have short pistils.

FM does not know who told Dr B [Wilhelm Breitenbach] that he had lost a whole library in the flood. In fact, he lost only a few books that he had left behind thinking they were safe where they were.

Has taken the opportunity of a recent cold spell to test CD’s views on nyctitropism [night movements] in plants. Describes Pandanus and Oxalis sepium.

Has just received CD’s letter of 4 July and he is glad that his observations on the effects of rain on plants interested CD.

Discusses some of his observations on the sleep movement in plants. Has been studying the leaflets of Crotalaria; has discovered they move to face the setting sun.

Has sent FM’s account of Pandanus and Oxalis to Nature ["Leaves injured at night by free radiation", Nature 24 (1881): 459].

Is crossing heterostyled plants.

Hopes to get his notes on bloom together.

Is in Cambridge with his son, resting

and reading F. M. Balfour’s Comparative embryology [1880–1].

Sent FM a copy of Earthworms.

Thanks CD for letter of 10 September [13326]

and for copy of Nature.

Reports on Lagerstroemia experiments.

Has been making observations on what happens to plants following heavy rain. Sends CD three specimens to show how dirt attaches to the undersides of leaves.

Is experimenting with effect of ammonium carbonate on chlorophyll and roots, but finds the results confusing.

Julius von Wiesner has published a book reinterpreting CD’s observations in Movement in plants [see 13422].

Waxy secretion or "bloom" on leaves.

FM’s article on Crotalaria.

In answer to CD’s query, FM thinks the seeds he sent were those of the sensitive Mimosa.

Reports his observations of movement of leaves of Bauhinia grandiflora and B. brasiliensis. They do not "sleep" in hot weather.

Sends some seeds of Pontederia he had fertilised.

On F. M. Balfour.

Effects of ammonium carbonate on roots.

FM’s Pontederia case is very curious.

Apologises for not having answered CD’s letters of 19 December [13564] and 4 January [13599] sooner.

Gives the results of his crossing experiments with Pontederia (Eichhornia) crassipes and P. azurea. Has also begun experiments on Heteranthera reniformis.

Thanks CD for sending three parts of the first volume of Bentham and Hooker’s Genera plantarum.