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To J. D. Hooker   1 August [1857]

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Summary

Important issue at stake with new flora calculations: evidence that species are only strongly marked varieties. Planning large-scale survey.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  1 Aug [1857]
Classmark:  DAR 114: 206, 207
Letter no:  DCP-LETT-2130

To J. D. Hooker   22 August [1857]

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Summary

Tabulation of varieties goes on; very important as it shows the branching of forms. Mentions his principle of divergence.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  22 Aug [1857]
Classmark:  DAR 114: 208
Letter no:  DCP-LETT-2134
Document type
letter (2)
Author
Addressee
Correspondent
Darwin, C. R. (2)
Hooker, J. D.[X]
Date
1857
08
01 (1)
22 (1)
letter