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To John Scott   6 March 1863

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Summary

Answers JS’s criticism of natural selection, which he doubts JS understands. CD does not believe in an "innate selective principle".

To understand "utility" JS should read CD on correlation.

Origin of maize: no longer thinks husked form was wild because of Asa Gray’s evidence on its variability.

Has information from Thomas Rivers on weeping habit in trees.

JS’s experiments on coloured primroses.

Encloses bibliographical note on Passiflora.

Author:  Charles Robert Darwin
Addressee:  John Scott
Date:  6 Mar 1863
Classmark:  DAR 93: B66–8, B71
Letter no:  DCP-LETT-4031

To John Scott   24 March [1863]

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Summary

Enthusiastic about JS’s work on Passiflora self-incompatibility.

CD quotes JS on rostellar pollen germination [in "Fertilisation of orchids", Collected papers 2: 77–8]. H. Crüger attributes it to ants’ carrying stigmatic secretion to pollen.

Homomorphic cowslip seedlings are, sadly, showing variation.

Author:  Charles Robert Darwin
Addressee:  John Scott
Date:  24 Mar [1863]
Classmark:  DAR 93: B72–4
Letter no:  DCP-LETT-4060
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