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To G. H. Darwin   8 January [1876]


Asks GHD to calculate average or mean heights of crossed and self-fertilised plant species.

Author:  Charles Robert Darwin
Addressee:  George Howard Darwin
Date:  8 Jan [1876]
Classmark:  DAR 210.1: 50
Letter no:  DCP-LETT-10348

From G. H. Darwin   [after 8 January 1876]



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

Author:  George Howard Darwin
Addressee:  Charles Robert Darwin
Date:  [after 8 Jan 1876]
Classmark:  DAR 77: 144–5
Letter no:  DCP-LETT-10349