From John Tyndall 5 December 1878

Royal Institution of Great Britain

5^th. Dec. 1878

My dear Darwin.

The syren shall be with you on Sunday.¹ The only bulk arises from the bellows necessary to blow it— but that also shall be arranged.

Ever faithfully yours | John Tyndall

CD had asked Tyndall for a siren for use in experiments with sensitive plants; see letter to John Tyndall, 4 December [1878]. According to Emma Darwin’s diary (DAR 242), Tyndall visited Down on Saturday 7 December 1878.

Please cite as “DCP-LETT-11774,” in Ɛpsilon: The Charles Darwin Collection accessed on 5 June 2025, https://epsilon.ac.uk/view/dcp-data/letters/DCP-LETT-11774

Summary