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To W. H. Dallinger   [after 10 January 1876]

Summary

CD has read all of WHD’s and J. J. Drysdale’s papers [on spontaneous generation, monads, and the origin of life] and finds them the best work on the subject.

The function of bladders in Utricularia is not to float the plant.

Author:  Charles Robert Darwin
Addressee:  William Henry Dallinger
Date:  [after 10 Jan 1876]
Classmark:  Royal Institution of Great Britain (RI MS CG/u/3)
Letter no:  DCP-LETT-10354

From W. H. Dallinger   10 January 1876

Summary

Has confirmed CD’s observations on Drosera.

Asks whether CD agrees that it is "no longer a fact" that the bladders of Utricularia vulgaris enable the plant to become lighter for fecundation and heavier when that act is accomplished. Plans to undertake further observations, under very high-powered microscopes, of mechanism of digestion.

Author:  William Henry Dallinger
Addressee:  Charles Robert Darwin
Date:  10 Jan 1876
Classmark:  DAR 162: 33
Letter no:  DCP-LETT-10352