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Darwin Correspondence Project

To S. H. Vines   22 November 1881

The transcript of this letter is not yet available online.

Summary

Rows of cells with granular matter following treatment with carbonate of ammonia also found in white and young rootlets of common zonal Pelargonium. Differs slightly from Euphorbia in that 2, 3, 4, or 5 rows often adjoin. CD wrong in supposing that these rows of cells were connected with lacticiferous ducts ("milk-tubes"). Root hairs arise exclusively from rows of cells without brownish granular matter. It appears that certain rows of cells with hairs are absorbent and store matter of some kind. This is a new view of the structure and function of rootlets. Francis Darwin will soon set up the salt solution to make the experiment SHV recommends.

Summary

Rows of cells with granular matter following treatment with carbonate of ammonia also found in white and young rootlets of common zonal Pelargonium. Differs slightly from Euphorbia in that 2, 3, 4, or 5 rows often adjoin. CD wrong in supposing that these rows of cells were connected with lacticiferous ducts ("milk-tubes"). Root hairs arise exclusively from rows of cells without brownish granular matter. It appears that certain rows of cells with hairs are absorbent and store matter of some kind. This is a new view of the structure and function of rootlets. Francis Darwin will soon set up the salt solution to make the experiment SHV recommends.

Letter details

Letter no.
DCP-LETT-13505A
From
Charles Robert Darwin
To
Sydney Howard Vines
Sent from
Down
Source of text
DAR 185: 78
Physical description
4pp

Please cite as

Darwin Correspondence Project, “Letter no. 13505A,” accessed on 24 September 2021, https://www.darwinproject.ac.uk/letter/DCP-LETT-13505A.xml

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