The chemical and physiological balance of organic nature : an essay / by J. Dumas and J.B. Boussingault ; edited by D.P. Gardner.

  • Dumas, J.-B. (Jean-Baptiste), 1800-1884.
Date:
1844
Catalogue details

Licence: Public Domain Mark

Credit: The chemical and physiological balance of organic nature : an essay / by J. Dumas and J.B. Boussingault ; edited by D.P. Gardner. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    10 VEGETABLE TERNARY COMPOUNDS. 1000 Parts of Air contained by Weight: Oxygen. Azote. April 27. Weather fine - - 229.2 770.8 Paris. Ditto - - - - 229.2 770.8 — April 28. Weather fine - - 230.3 769.7 Paris. Ditto - - - - 230.9 709.1 — 29. Weather fine - - 230-3 769.7 — Ditto - - - - 230.4 769.6 — May 29. Rain ----- 230.1 769.9 — July 20. Noon, Rain - - - 230.5 769.5 — 21. Midnight, sky clear 230.0 770.0 — 24. Mid-day - - - 230.7 769.3 — Mean - - - - 230.2 769.8 — From the nature of the procedure, possible errors tend to diminish the proportion of oxygen. We can therefore say that, at Paris, there are at least 230.2 parts of oxygen in 1000 parts of air by weight. Analysis shows no difference in regard to air taken from a height of upwards of 9000 feet. As it is customary to consider the composition of the air by the volume, it is proper to add to these particulars, that from the numbers given, and hav- ing regard to the densities of oxygen and nitrogen, the air of our atmosphere must consist of 208 oxygen, and 792 azote, 1000 air.