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Darwin Correspondence Project

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Darwin Correspondence Project
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From Edward Cresy   10 November 1860

Summary

Explains discrepancies in weights and measures caused by changes since 1836 in apothecaries’ measures.

EC has found that a discrepancy in A. W. von Hofmann’s experiments with iodine solutions resulted from an error in Hofmann’s use of decimals.

Reports S. P. Woodward’s opinion of the Origin: "a very sad book, it unsettles all one’s religious principles and the worst of it is so much of it is true".

Author:  Edward Cresy, Jr
Addressee:  Charles Robert Darwin
Date:  10 Nov 1860
Classmark:  DAR 58.1: 7, 9
Letter no:  DCP-LETT-2980

Matches: 3 hits

  • … I find 10 milligrammes per 1000 grammes = 1 kilogramme = 1 litre—gives .01 per gramme and …
  • … contained 10 milligrammes of iodine in 1 kilogramme of water. i.e. .01 milligramme per …
  • 10 milligrammes of iodine in 1000 grammes of water—that is one to one million— the D r then took one gramme of the solution containing therefore .01  …

From Leonard Darwin   [after 14 February 1874]

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Summary

Statistics showing rate of decline of population in Sandwich Islands, 1832–72.

Author:  Leonard Darwin
Addressee:  Charles Robert Darwin
Date:  [after 14 Feb 1874]
Classmark:  DAR 90: 8
Letter no:  DCP-LETT-8709

Matches: 1 hit

  • … 4 . 6 1836 —1 . 97 1850 —2 . 01 1860 —2 . 06 1866 —2 . 10 The 4 . 6 seems the only one out …
Document type
letter[X]
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Date
1860 (1)
1874 (1)