Search: Charles Darwin in collection 
1850-1859::1856::07::19 in date 
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From:
Charles Robert Darwin
To:
Joseph Dalton Hooker
Date:
19 July [1856]
Source of text:
DAR 114: 171
Summary:

Multiple creations.

Necessity for crossing in plants and animals: JDH to take up the subject; explains separate sexes in trees.

Continental extensions.

Contributor:
Darwin Correspondence Project
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