Doubts that glands of calyx of cleistogamic Malpighiaceae serve as protection.

Some species of Solanum bear long- and short-styled flowers on same plant.

Changing colours of some flowers may show insects the proper moment for fertilisation.

Doubts that the style of Pontederia cordata changes length.

Sexual difference in wings of some butterflies due to development in male of scales that emit odours to excite female.

Asks for Cassia seed for experiments.

Sends proboscis of a Sphinx-moth that is 22 cms long.

Discusses eleven species of butterfly which visit Lantana, a plant which blooms only for three days and whose flowers are yellow on the first day, orange on the second, and purple on the third. Most species only visit the flowers when they are yellow.

Describes and draws the odiferous organs of a Sphinx-moth.

Describes a secondary sexual character of several species of Callidryas and other Pierinæ: the costal margin of the anterior wing is sharply serrated in the males, while it is smooth in the females.

CD and son [Francis] working on spontaneous movements of plants and heliotropism.

Has given [Raphael Meldola] permission to read extracts of FM’s last letter [not found], on odours emitted by moths, before Entomological Society [Trans. R. Entomol. Soc. Lond. (1878): ii–iii].

Reports butterfly species that apparently mimic each other and gives details of some odoriferous species.

[Letter copied in Raphael Meldola’s hand from original sent to Meldola with 11449.]

Thanks FM for letter of 22 Feb [not found] on Lepidoptera. Will send it to Entomological Society to be read. FM’s earlier letters produced best discussions of the season.

Thanks for seeds of Viola.

He and Francis [Darwin] are at work on biology of seedling plants and wish to observe how the flowers penetrate the earth.

The Pontederia did not germinate, probably pressed too much [in post].

Observations on a sensitive Mimosa.

Comments on structure and positioning of "odoriferous organs" of moths and butterflies,

and feeding habits of butterfly larvae.

Has forwarded FM’s letter to Raphael Meldola.

Thanks for information on Mimosa.

Would like to know how Cassia behaves in the rain.

Is sending CD the seeds of a beautiful Cassia given to him by a friend. He sketched the unripe fruit a few months ago. This plant is rare in the area around Sta Catharina. He has found their largest and most beautiful butterfly Callidryas manippe near this tree and its caterpillars living on its leaves. Comments on how remarkable it is to find a species limited to living on a single tree in so large an area.

Thanks for seeds

and information about earthworms.

Is working hard at movement in plants.

Has lately found frog that has eggs on its back.

Pupae of caddis-flies living on rocks have lost fringe of hairs on their feet. In species that live in the water these are used for swimming.

Has sent FM’s letter on caddis-fly to Nature ["On a frog and caddis-flies", Nature 19 (1879): 462–4].