Wants a Cassia identified

and several plants and seeds for experimental purposes.

Thanks for the plants for heliotropic experiments.

Thanks for WTT-D’s trouble.

Asks for identification of an Oxalis flower.

Has been writing life of Erasmus Darwin.

Wants plants with heliotropic aerial roots. Has proved root apex governs nature of flexure in upper part of root.

Thanks for plants

and case of sleeping Crotalaria.

"Bloom" for the present has "gone to the dogs".

Thanks WTT-D for Drosophyllum seeds.

Structure of some "very curious" tendrils.

Has failed with his experiments on aerial roots.

Wants a plant that shows interesting sleep movements identified.

Wants cryptogam identified; has been observing its movements.

Wants a plant identified;

would like some cotton seeds.

Wants some apheliotropic plants for experiments.

Thanks for cotton seeds.

Germination of Megarrhiza.

Suspects WTT-D is the author of a good review of Erasmus Darwin in Nature [21 (1880): 245–7].

Asa Gray wants seeds of a variety of cotton known as vine cotton.

Wants Ipomoea seeds for observing germination.

WTT-D’s suggestion about absorbent function of pegs in Abronia suggests origin of pegs in Welwitschia, which deeply interests CD. Previously could not see how pegs became large enough to be of mechanical use. Now thinks tissue between hypocotyl and radicle absorbs fluid, which would favour rise of peg to expose larger surface.

Rejects German contempt for investigating use of organs.

Asks WTT-D to observe how worms draw Robinia leaves into burrows.

Wants plants with two sets of anthers of different colours. Fritz Müller letter [13041a] has made him wish to renew experiments and observations carried out 20 years ago.

Wants Monochaetum flowers for examination as he has forgotten the structure and cannot publish until he has repeated his observations and experiments.