RECORD: Darwin, C. R. 1867-1868.07.08. Hibiscus africanus / Draft fragment of Descent 1: 243-4. CUL-DAR79.107-109. 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 volumes CUL-DAR 76-79 contain material for Darwin's book Cross and self fertilisation (1876).


(86

Hibiscus Africanus 1867.

13 fl. crossed & all produced pods, max. 46. min 10 containing 32.4 seed

18 fl. self-fert. produced 15 pods max 47. min 11 ― [do] 32.3 seed

421 crossed seed weighed 26.13 ∴ 484 would weigh. 30.04

484 self seed weighed.. 31.42

Hence the crossed hardly more productive than self, & seed of latter the finest.—

(May 17 the self- seeds have germinated very badly.)

(June 7. Pot IV. crossed side all dead.)

(July 8th /68/

 

 

Pot II—

Crossed

inches

14

Selfs

inches

14

 

 

self first

Pot 2 III

8

7

crossed flowered first

Pot 3 I

13 1/2

16 1/4

crossed first

Pot IV

5

3 3/4

Crossed first

Pot IV. Aug 23

17 1/2

20 4/8

 

 

58

61 4/8

[108]

[Draft of Descent 1: 243-4.]

several European Kingdoms, [page excised] deaths increased steadily according to the latitude of their homes native country. But on the view of the immunity depending on acclimatisation it is inexplicable why the negro shd be freer than the native of any enjoy as should be freer than the native inhabitants aborigines of other intertropical country regions. The Revd [page excised]tramin his interesting work on the [page excised] native residents inhabitants of

[Descent 1: 244: "…Rev. B. Tristram states, that there are districts in Northern Africa which the native inhabitants are compelled annually to leave, though the negroes can remain with safety".]

[108v]

[calculations not transcribed]

86

[calculations not transcribed]


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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 31 May, 2023