RECORD: Darwin, C. R. 1879.06.12-20. Lotus Jacobaeus. CUL-DAR209.9.37. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 7.2022. 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-DAR209.9 contains materials for Darwin's book Movement in plants (1880).


[37]

June 12' 1879 Lotus Jacobaeus.

Believed to be new seeds ie last year— now middle of summer— Cotyledons at pin 1 1/2 mm wide

3. marked with white pins first expanded today or perhaps yesterday— At 10° P.m no trace of sleep.—

13th 10° P.m a little raised. —

(14th 10° 30' P.m, one with Cots considerably raised— less than right angles— the 2 other not raised

15th 10° P.m. one white almost Vertical —

(16th do, other 2 considerably raised—

(17th. 10' P.m 2 white pot little closed— one well closed—

18th do

20th do do do

Not Worth using, but I have said that period of rising extremely variable

Jun 14th 8° a.m. 3 new seedling— Black Pins Cots. Horizontal

14' 10° 30' P.m, one with cots considerably raised less than right angles the other two not so.

15th 10° P.m— Two of Blacks almost vertical

16' 10° P.m All 3 Blacks much raised, but 2 most so

17th. 10' — do do do do

18th do— do do

20th do. do do

There certainly is some variability in the closure of the cotyledons

Many not difference be difference in illumination during different seasons — together with some variability.


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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 25 September, 2022