Volume 4

Chemical essays / by R. Watson.

  • Watson, Richard, 1737-1816.
Date:
1793-1796
Catalogue details

Licence: Public Domain Mark

Credit: Chemical essays / by R. Watson. Source: Wellcome Collection.

    127/394 (page 113)
    tirs; but Ihould not, from fuch ac- cidental changes as are effected by minute variationsof heat, be referred to different claffcs: had water been called melted ice, no one would have fcruplcd to confider it as be- longing to the mineral kingdom. The reducing quickfilver into a folid malleable metal, by a due de- gree of cold, was an important dif- covcry in phyfics: we learn from thence to confider all fluid bodies, fuch as water, oils, fpirits, aethers, and probably the air itfelf, as con- vertible into folids without the in- troduc^tion of any frigorific parti- cles, but Amply by a diminution of heat; and all folid bodies as con- vertible into fluids, without fuffer- ing any other change in their con- flitution, except what arifes from the volatilization nf fuch of their prin-