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To S. H. Vines   1 November 1881

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Summary

Asks SHV about nature of granular matter formed in root cells of Euphorbia peplus which have been placed in solution of ammonium carbonate.

Author:  Charles Robert Darwin
Addressee:  Sydney Howard Vines
Date:  1 Nov 1881
Classmark:  DAR 185: 75
Letter no:  DCP-LETT-13450

To S. H. Vines   4 November 1881

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Summary

Thanks SHV for his letter [13455] in answer to his questions about the action of ammonium carbonate on the root cells of Euphorbia peplus. Suggests further observations.

Has read J. Sachs [Textbook of botany, English translation (1875)] and H. A. De Bary [Vergleichende Anatomie (1877)] on milk-tubes. He believes that tubes he has observed in germinating roots of Euphorbia myrsinites are modified milk tubes. Will send a paper on the subject to the Linnean Society.

Author:  Charles Robert Darwin
Addressee:  Sydney Howard Vines
Date:  4 Nov 1881
Classmark:  DAR 185: 76
Letter no:  DCP-LETT-13459A

To S. H. Vines   15 November 1881

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Summary

More observations of the radicles of germinating seeds of Euphorbia peplus for appearance of milk-tubes.

Comments on J. v. Wiesner’s and W. F. P. Pfeffer’s views and criticism of his experiments.

Author:  Charles Robert Darwin
Addressee:  Sydney Howard Vines
Date:  15 Nov 1881
Classmark:  DAR 185: 77
Letter no:  DCP-LETT-13486A

To S. H. Vines   22 November 1881

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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.

Author:  Charles Robert Darwin
Addressee:  Sydney Howard Vines
Date:  22 Nov 1881
Classmark:  DAR 185: 78
Letter no:  DCP-LETT-13505A

To S. H. Vines   27 November 1881

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Summary

Describes experiment in which Euphorbia and Drosophyllum roots were exposed to ammonium carbonate solution. Asks SHV’s opinion.

Author:  Charles Robert Darwin
Addressee:  Sydney Howard Vines
Date:  27 Nov 1881
Classmark:  DAR 185: 79
Letter no:  DCP-LETT-13513

From S. H. Vines   2 November [1881]

Summary

On the action of ammonium carbonate on plant cells. "Aggregation" of protoplasm.

Author:  Sydney Howard Vines
Addressee:  Charles Robert Darwin
Date:  2 Nov [1881]
Classmark:  DAR 180: 6
Letter no:  DCP-LETT-13455

From S. H. Vines   24 November [1881]

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Summary

Will observe the granular cells in roots, to investigate CD’s observation that root-hairs spring from cells that are not granular. Hopes they may be soluble in [carbonate of ammonia] solution.

Author:  Sydney Howard Vines
Addressee:  Charles Robert Darwin
Date:  24 Nov [1881]
Classmark:  DAR 62: 1
Letter no:  DCP-LETT-13509
Document type
letter (7)
Addressee
Correspondent
Darwin, C. R.[X]
Vines, S. H.[X]
Date
1881
11
01 (1)
02 (1)
04 (1)
15 (1)
22 (1)
24 (1)
27 (1)
letter