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1860-1869::1863::06::25 in date 
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From:
Charles Robert Darwin
To:
Joseph Dalton Hooker
Date:
25 [June 1863]
Source of text:
DAR 115: 197
Summary:

CD describes first observation of gyratory motion of tendrils: explains its adaptive function is to find objects to hold on to.

Contributor:
Darwin Correspondence Project
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