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To J. H. Gilbert   8 June 1881

Summary

Regrets that he has not strength enough to visit [Rothamsted].

Author:  Charles Robert Darwin
Addressee:  Joseph Henry Gilbert
Date:  8 June 1881
Classmark:  Rothamsted Research (GIL13)
Letter no:  DCP-LETT-13198

To J. H. Gilbert   12 January 1882

Summary

Quantity of nitrogen in castings surprises CD.

Comments on papers: [J. B. Lawes and J. H. Gilbert, "Results of experiments on mixed herbage, pt 1", Philos. Trans. R. Soc. Lond. 171 (1880): 289–416; Gilbert, Lawes and M. T. Masters, "pt 2: The botanical results", Philos. Trans. R. Soc. Lond. 173 (1882): 1181–413].

Has never made sections to see how deep worms burrow – five or six feet is probable. Wishes the problem had arisen when he made his observations.

Author:  Charles Robert Darwin
Addressee:  Joseph Henry Gilbert
Date:  12 Jan 1882
Classmark:  Rothamsted Research (GIL13)
Letter no:  DCP-LETT-13616

To Joseph Henry Gilbert   3 June [1869]

Summary

Declines invitation.

Author:  Charles Robert Darwin
Addressee:  Joseph Henry Gilbert
Date:  3 June [1869]
Classmark:  Rothamsted Research (GIL9.6)
Letter no:  DCP-LETT-6773

To J. H. Gilbert   11 August 1875

Summary

Apologises for keeping the tables so long [see 10090]. The results seem extremely curious.

Comments on paper by JHG and J. B. Lawes.

Author:  Charles Robert Darwin
Addressee:  Joseph Henry Gilbert
Date:  11 Aug 1875
Classmark:  Rothamsted Research (GIL13)
Letter no:  DCP-LETT-10115

To J. H. Gilbert   [before 9 March 1876]

Summary

Thanks for advice concerning preparation of soil for experiments. Will order the salts. Asks about burning soil or washing it with acid.

Thanks for invitation. His son [Francis] would like to inspect JHG’s plots.

Author:  Charles Robert Darwin
Addressee:  Joseph Henry Gilbert
Date:  [before 9 Mar 1876]
Classmark:  Rothamsted Research (GIL13)
Letter no:  DCP-LETT-10376

To J. H. Gilbert   16 February 1876

Summary

Describes self- and cross-fertilisation experiments.

Asks JHG’s advice on setting up an experiment designed to test whether the cause of variation in cultivated plants lies in different substances absorbed from the soil when absorption is not interfered with by other plants in a state of nature. Can JHG suggest how he can get soil free of all the substances which plants naturally absorb?

Author:  Charles Robert Darwin
Addressee:  Joseph Henry Gilbert
Date:  16 Feb 1876
Classmark:  Rothamsted Research (GIL13)
Letter no:  DCP-LETT-10399

To J. H. Gilbert   5 February 1881

Summary

Asks whether vegetable mould has an acid reaction. The contents of intestines of earthworms and castings are acid, which leads him to inquire about mould.

Author:  Charles Robert Darwin
Addressee:  Joseph Henry Gilbert
Date:  5 Feb 1881
Classmark:  Rothamsted Research (GIL13)
Letter no:  DCP-LETT-13038

To J. H. Gilbert   25 February 1881

Summary

Discusses acidity of earthworm castings. JHG’s reply will make him more cautious.

Would like to see W. A. Detmer’s paper [Landwirtsch. Versuchs-Stat. 14 (1871): 248–300] and S. W. Johnson’s work [How crops feed].

Comments on food value of white and brown bread.

Author:  Charles Robert Darwin
Addressee:  Joseph Henry Gilbert
Date:  25 Feb 1881
Classmark:  Rothamsted Research (GIL13)
Letter no:  DCP-LETT-13066

To J. H. Gilbert   15 March 1881

Summary

Returns the two books JHG had lent him. "I can plainly see I had better say nothing about the acidity of common mould."

Author:  Charles Robert Darwin
Addressee:  Joseph Henry Gilbert
Date:  15 Mar 1881
Classmark:  Rothamsted Research
Letter no:  DCP-LETT-13087
Document type
letter (9)
Author
Addressee
Gilbert, J. H.[X]
Correspondent
Darwin, C. R.[X]
Gilbert, J. H.[X]
Date
1869 (1)
1875 (1)
1876 (2)
1881 (4)
1882 (1)
letter