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To J. D. Hooker   30 September [1857]

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Summary

C. F. Ledebour [Flora rossica (1842–53)] particularly useful for variety tabulation. Results generally favourable.

Additions to Down House.

Last two chapters of MS took six months to write.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  30 Sept [1857]
Classmark:  DAR 114: 210
Letter no:  DCP-LETT-2148

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  • Heinrich Rudolph. 1843–4. Spicilegium florae Rumelicae et Bithynicae exhibens synopsin plantarum quas aest. 1839 legit. 2 vols. Brunswick: F. Vieweg. Koch, …

To J. D. Hooker   9 December [1857]

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Summary

Survey of species with well-marked varieties: JDH’s Labiatae case a "great blow", but result is very generally consistent.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  9 Dec [1857]
Classmark:  DAR 114: 217
Letter no:  DCP-LETT-2182

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  • Koch 1843–4 . CD was not able to incorporate data from Bentham 1858  into his table on the number of species and varieties in large and small genera (see Natural selection , pp.  149, 152). By the time Bentham 1858  was published, CD was busy writing Origin . See letter to George Bentham, 1 December [1857] , and letter from J.  D. Hooker, [6 December 1857] . See letter to Ferdinand Jakob Heinrich
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letter (2)
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Addressee
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1857 (2)