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To J. B. Hannay   22 June 1881

Summary

Suggests modification in JBH’s experiment on formation of diamonds.

Speculates about chemical products of constituents of living organisms when subjected to heat and pressure.

Author:  Charles Robert Darwin
Addressee:  James Ballantyne Hannay
Date:  22 June 1881
Classmark:  American Philosophical Society (Mss.B.D25.592)
Letter no:  DCP-LETT-13214

From J. B. Hannay   28 May 1881

Summary

In complex molecules such as proteins, liquid and gaseous states merge.

Author:  James Ballantyne Hannay
Addressee:  Charles Robert Darwin
Date:  28 May 1881
Classmark:  DAR 166: 98
Letter no:  DCP-LETT-13180

From J. B. Hannay   27 June 1881

Summary

Experiments on change of state in albumen under high temperature and pressure.

Author:  James Ballantyne Hannay
Addressee:  Charles Robert Darwin
Date:  27 June 1881
Classmark:  DAR 166: 99
Letter no:  DCP-LETT-13222
Document type
letter (3)
Addressee
Correspondent
Darwin, C. R.[X]
Hannay, J. B.[X]
Date
1881 (3)
letter