The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. [1881]. Phalaris canariensis / Vicia sativa / Cycas. CUL-DAR62.51. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 5.2023. 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-DAR62 contains for Darwin's papers 'The action of carbonate of ammonia on the roots of certain plants', 1882, F1800 and 'The action of carbonate of ammonia on chlorophyll-bodies', 1882, F1801.

[51]

Phalaris Canariensis soaking for 21° in sol of 4 to 1000 no action.

Vicia sativa, soaking, exposed for 21° 1/2° in sol. of 4 to 1000 — Roots have a very faint striped longitudinally appearance apparently due to certain rows of cells being more transparent & other of faintest brownish tint, but I can see something of the kind in root not exposed to ammonia; so I may say no effect. I believe excessively minute globules in the superficial cells had increased in number. I observed that there were often collection of granules at base of the young root-hairs

Cycas —? young Plant described in movement of Plants) roots immersed for 21° in sol. of 7 to 1000 no effect. —

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