Thinks CD overestimates earthworms’ role in creating mould. Gives some observations on worms and questions about their breeding habits.

Thanks CD for offer of assistance in exploration of Eskdale beds. Describes finds of scorpions and unusual amphibians.

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

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.