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From J. S. Burdon Sanderson   28 July [1873]

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Summary

A hasty answer to CD’s letter [8987] of 25 July. Mentions Dr Osler’s observations on behaviour of colourless blood corpuscles in solutions of sodium and potassium salts of same strength.

Author:  John Scott Burdon Sanderson, 1st baronet
Addressee:  Charles Robert Darwin
Date:  28 July [1873]
Classmark:  DAR 58.1: 28–9
Letter no:  DCP-LETT-8988

Matches: 1 hit

  • Burdon Sanderson, 25 July 1873 . See letter to J.  S.  Burdon Sanderson, 25 July 1873 . William Osler was a postgraduate student in Burdon Sandersons laboratory at University College, London; his experiments ultimately led to the description of platelet cells in human blood ( Cooper 2005 ). For details of Osler’s experiments, see Osler and Schäfer 1873 and Osler 1874 . …

To J. S. Burdon Sanderson   9 September [1873]

Summary

Pleased JSBS has decided to work on Drosera; sends plants. Does not know whether thermo-electric pile could detect temperature change when leaves close.

CD’s experiment with very weak hydrochloric acid repeated with success: the plants digest albumen more quickly.

Author:  Charles Robert Darwin
Addressee:  John Scott Burdon Sanderson, 1st baronet
Date:  9 Sept [1873]
Classmark:  University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-14)
Letter no:  DCP-LETT-9047

Matches: 1 hit

To J. S. Burdon Sanderson   15 August 1873

Summary

Thinks it would be worth while testing for electrical changes in the leaves of insectivorous plants.

Author:  Charles Robert Darwin
Addressee:  John Scott Burdon Sanderson, 1st baronet
Date:  15 Aug 1873
Classmark:  University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-13)
Letter no:  DCP-LETT-9013

Matches: 1 hit

  • letter from J.  S.  Burdon Sanderson, 13 August [1873] and n.  7. Burdon Sanderson did not experiment with a thermopile (a device that converts thermal energy into electrical), but used a galvanometer (a device for detecting and measuring electric current) to record the nerve-like response of a leaf of Dionaea when stimulated with an induction coil (see Burdon Sanderson 1874 , …