Search: Charles Darwin in collection 
Darwin, G. H. in author 
1870-1879::1876::01 in date 
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
[after 8 Jan 1876]
Source of text:
DAR 77: 144–5
Summary:

Provides CD with a method of obtaining a numerical ratio that expresses the superiority in heights of crossed plants to self-fertilised plants.

Contributor:
Darwin Correspondence Project
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