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Darwin, Francis in correspondent 
1870-1879::1878::08::14 in date 
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From:
Charles Robert Darwin
To:
Francis Darwin
Date:
14 [Aug 1878]
Source of text:
DAR 211: 43
Summary:

Instructs FD to plant some Oxalis seeds.

Wishes to trace the movement of an old cotyledon. Asks him to examine and compare the pulvinus of a species which moves its cotyledon greatly with one of a species that moves it only moderately.

Are the tendrils ready for heliotropic experiment yet?

Contributor:
Darwin Correspondence Project