An essay on the analysis of mineral waters / by Richard Kirwan.

  • Kirwan, Richard, 1733-1812.
Date:
1799
Catalogue details

Licence: Public Domain Mark

Credit: An essay on the analysis of mineral waters / by Richard Kirwan. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    dissolved in a pmt-e, or 17950 grains of water, without any excess of fixed air. 2 Mem. Dijon. 1784. p. 157 and 158. Pro- bably the quantity was so small as to escape him. Lastly, Marquis de Breze found 4 grains of aerated lime (calcareous spar finely pulvciized) dissolved by 18 cubic inches of fixed air in 58 cubic inches of water. Mem. Turin, 1788, p. 15. Here the weight of fixed air far exceeds that of the aerated lime ; yet, though it was 4 less than the volume of watei, it held the aerated lime in solution. I have dwelt the longer on these circum- stances, as I look upon attention to them to be of importance in geological re- searches, and they have hitherto been over- looked. 5. Aerated Magnesia very commonly oc- curs in Mineral Waters. Magnesia fully aerated is of itself soluble in water, without the assistance of superfluous fixed air. Ac- cording to 1 Bergm. 373, the cantharus, or 42250 grains of water, takes up 47 grains of such magnesia in the temperature of 590. Consequently 7000 grains of water (an Averdup. pound) may take up 7,786 of this salt. But water fully aerated takes up a still