RECORD: Darwin, C. R. n.d. Memoranda (to be returned) Dr Hooker. CUL-DAR15.2.53b. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 3.2023. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volume CUL-DAR15.2 contains calculations and tables for Darwin's 'big book' Natural Selection F1583.
Decandolle, Prodromus, vols. 2, 10, 11, 12, 13, 14. This was used in Table III of Natural selection, p. 153.
[53b]
Memoranda (to be returned) Dr Hooker.
In the 6 vols. of D. C. Prod. I have had tabulated 15,645 15,745 Count species, excluding those "dubiæ" "non satis cognitæ."
The Labiatæ & Verbenaceæ (which give unfavourable results when divided into genera with 10 species & under — and with 11 species & upwards) include 2865 i.e. (2865/15,645) between 1/5th & 1/6th of the whole lot.
Genera with 11 species & upwards. |
Genera with 10 species & downwards |
|||
Whole six volumes including all species} |
1617/13,050 |
= 123/1000 |
271/2595 |
= 104/1000 |
Acanthaceæ |
232/1088 |
= 213/1000 |
15/335 |
= 194/1000 |
Solanaceæ |
258/1419 |
= 181/1000 |
11/139 |
= 79/1000 |
Leguminosæ |
223/2937 |
= 75/1000 |
38/619 |
= 61/1000 |
Rosaceæ |
103/562 |
= 183/1000 |
24/144 |
= 166/1000 |
Verbenaceæ |
21/506 |
= 41/1000 |
5/82 |
= 60/1000 |
Not counted cultivated Vars.—not those marked (a) (but some doubtful from * generally counted)
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 7 September, 2023