Experiments and observations relating to acetons acid, fixable air, dense inflammable air, oils, and fuel ; the matter of fire and light, metallic reduction, combustion, fermentation, putrefaction, respiration and other subjects of chemical philosophy / By Bryan Higgins, M. D.

  • Higgins, Bry. (Bryan), 1737?-1820.
Date:
1786
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Licence: Public Domain Mark

Credit: Experiments and observations relating to acetons acid, fixable air, dense inflammable air, oils, and fuel ; the matter of fire and light, metallic reduction, combustion, fermentation, putrefaction, respiration and other subjects of chemical philosophy / By Bryan Higgins, M. D. Source: Wellcome Collection.

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    nated with volatile vitriolic acid, from whLch it cannot eafily be freed. It is therefore to be kept apart. The former portion is eafily purified from the marine acid which rifes along with it, in confequence of the decompofition of the marine fait contained in the acetous fait, by diftilling it from a twelfth part of frefh Ter. Foliata. In this cafe there is an cncreafe of the quantity of acetous acid proportionate to the quantity of marine acid abforbed by the alkali of the foliated earth, and ex-^ pended in decompofing It: and the acetous acid is obtained in a ftate of purity and high concentration, becaufe this acid is more vo- latile than water, and the undecompofed part of the acetous fait retains the water until the chief part of the acid is dillilled, I generally referve the firft half of this acet. acid for accurate experiments, diflinguifhing it by the name of Purified Acetous Acid, and fometimes, where my notes are literally tranfcribed, it is called my Acetous Acid ; the other half ferves for any purpofe in B 3 which