RECORD: Darwin, C. R. 1880. [Earthworm research notes]. CUL-DAR64.1.41. Edited by John van Wyhe (The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Prepared and edited by John van Wyhe 7.2025. 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-DAR64.1 contains material for Earthworms, experiments on worms; different locales & photographs and cuttings from journals. All of the textual items in these folders, including this one, have been transcribed in a single file: CUL-DAR63-65.
41
Sep 15/80
Worms
Lime leaf from worms burrow — The guard cells of the stomata at the base of the leaf (which is green) are all full of starch —
Those of the apex of leaf contain undoubtedly much less starch than those at the base. Those of the extra ragged bit at the apex contained no starch
Many stomata are seen with starch gone only out of one guard cell. The nucleus is still present in the cells at the base but has disappeared at the apex.
Laburnum — Transverse sections
1st apex no starch, 1st base some section starch, some none, the starch is certainly disappearing first in peripheral pallisade cells: 2nd base contains but little starch
2nd apex more starch than 1st base! — cannot make out any certain difference they both vary.
In the stomata I cannot make out a clear difference either way.
41v
(Starch in worm-bound leaves & other Trypsin)
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 7 July, 2025