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Darwin Correspondence Project

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From Edward Cresy   10 November 1860


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  …
Document type
letter (1)
Cresy, Edward, Jr[X]
1860 (1)