Summary

The Salvia has arrived.

Has found several fly orchids coming in flower, but no Cephalanthera or Musk.

Cannot do any teazel work.

Anthelme Thozet has sent him a lot of Ophideres.

Summary

Reports his discovery of the behaviour of protoplasm in teasel cells.

Summary

Has sent off Bulls Horn to Kew; has sent hamper to CD; is preparing drawings for his presentation at the Linnean Society; asks after William, and hopes to be able to come to visit.

Summary

Edwin Ray Lankester wants to reprint FD’s paper ‘Food bodies’ in the Quarterly Journal of Microscopical Science.

Summary

Has got a dodge to see protoplasm in Drosera in dead state. Comes to Hopedene with Amy tomorrow. his paper went off well.

Summary

Sorry the corrections were so tedious, and offers to do revises.

Summary

Thanks for papers and letter; has been working in the mornings on teasel.

Summary

Forwards letters.

Summary

Lists the tasks he has completed; sends on letter from Romanes; news of Bernard.

Summary

FD has sent proofs; nutating of Ricinus; Horace Darwin and the wormograph.

Summary

Thanks for sending Nature; plans to leave on 22 May; anecdote about Bernard.

Summary

Thinks it would be a good idea to give the typing machine to Karl Semper.

Summary

Sleep of Porlieria hygrometrica seems independent of light.

Will have lots of time for oats. W. F. P. Pfeffer’s point is that there is no growth in sleepers with joints. A. F. Batalin says there is a slight growth.

[Dated Saturday 28th by FD.]

Summary

Reports observations on day and night movement in Porlieria.

Summary

He has been talking to Julius von Sachs about sleeping plants that move with and without growth.

Summary

Sleep in Porlieria studied.

Oats begin germinating.

Summary

Chlorophyll development in oat seedling.

Lists the sleeping plants he has seen.

Julius Sachs thinks Hugo de Vries has not cleared up everything [about climbing plants]. But Sachs has not worked on the mechanical problem.

Summary

More sleepers from green-house.

Julius Sachs’s view of climbing plants: he distinguishes between nutation to find a support and growth after support is found.

Summary

Has been investigating nutational movements of climbing plants; comments on the opinions of Julius von Wiesner and Julius Sachs. Remarks on the sleep movements of certain plants and the mechanism of tendril curvature. Is experimenting with Porlieria.

Has visited K. G. Semper’s laboratory.

Summary

Notes Julius Sachs’s opinion on the heliotropism of moulds: he can see no use in the response.

C. E. Stahl is working on swarm spores which can be made both helio- and apheliotropic.

Sachs has told him that some ferns sleep, and he suspects that some grasses may move.

Sachs also feels they may be working at bloom from a wrong point of view and suggests leaves may need to keep dry in order to keep their stomata open.