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To J. D. Hooker   31 [August 1860]

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Summary

Observations on Drosera: plants can distinguish minute quantities of nitrogenous substances.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  31 [Aug 1860]
Classmark:  DAR 115: 71
Letter no:  DCP-LETT-2886
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