Summary

He has had no success with horse or Spanish chestnuts.

Summary

Thanks FD for corrections [to Orchids (1877)].

Thinks Johann von Fischer’s paper on monkeys’ rumps [Der Zoologische Garten 17 (1876): 116–27, 174–9] worth translating, and he intends to write a letter on it to Nature [Collected papers 2: 207–11].

Summary

Forwards a letter from W. F. P. Pfeffer, who opposes some of Julius Wiesner’s notions on plant movements.

Summary

Sends father’s regrets that CD will not be able to help Stecker as appointments are few in number and much sought after.

Summary

Sachs jumps to the conclusion twiners and tendrils are similar from the Menispermum that twined without a stick. Akebia grows down a stick; not only the free end is involved.

Sleeping plants.

Summary

Commiserates on news of Wiesner and experiment on transmission of heliotropism. Asks whether he should review book for Nature.

Summary

Has been reading Julius von Wiesner’s book [Das Bewegungsvermögen der Pflanzen (1881)]. Comments that it is "an excellent book, but he vivisects me in the most grievous terms, but most effectively".

Has been experimenting on aggregation of chlorophyll but with little success.

Summary

Thanks for two letters from Pfeffer. Will return translation of Pfeffer and send a letter from Elfring. Looking forward to working on "antiWiesner" experiments. Will return on 26th or 27th.

Summary

Discusses sleep movements of Porlieria.

Has read an abstract of Julius Wiesner on heliotropism and geotropism ["Die heliotropischen Erscheinungen im Pflanzenreiche", Anz. Kais. Akad. Wiss. Wien 15 (1878): 137–40] which seems important but is puzzling.

Gives details of his observations on climbing plants with reference to comments by Julius Sachs.

Summary

Thinks FD should review Julius von Wiesner’s book [Das Bewegungsvermögen der Pflanzen (1881)]. CD comforted that Wiesner’s experiments support their findings but finds it laughable how differently he has interpreted them.

Summary

Fungus is an Aecidium. Porliera, Anthuriums and Aroids will hopefully sprout if weather gets hot. Sachs has changed his ideas about the cause of heliotropism. Describes men he is sharing a lab with.

Summary

Comments on two letters received from W. F. P. Pfeffer [13425, 13464] who thinks Julius Wiesner’s view that light, etc. acts directly on plants is wrong.

Is frantic over the number of letters received about worms; feels the enthusiasm of the reception of Earthworms is laughable.

Is confounded by Euphorbia rootlets and has re-examined the effect of carbonate of ammonia.

Has thought of three good experiments to oppose Wiesner.

Summary

Earthworms is selling well.

Discussed how to repeat some of their plant experiments while in Cambridge.

Comments on Julius Wiesner’s views on plant movement.

S. H. Vines was very much surprised at the action of carbonate of ammonia on the roots of Euphorbia.