Letter 13043 Haeckel, E. P. A. to Darwin, C. R. 9 Feb 1881 Summary Add + Sends birthday wishes. + Comments on Movement in plants. + Sends System der Ascrapeden [1880]. + Describes work on Challenger Medusae. + Comments on success of CD's theory. Transcription The full text of this letter is not yet available online. Footnotes Add
