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Letter 10523

Darwin, C. R. to Treat, Mary

1 June 1876

Summary

Thanks MT for her article ["Is the valve of Utricularia sensitive?", Harper’s New Mon. Mag. 52 (1875): 382–7]. Does not understand why he failed to detect movement [in Utricularia], but it appears from her observations that the valve is sensitive.

Transcription

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