The EARTHS, which we are to-day to examine, are nine in number:
SILEX,
ALUMINE,
BARYTES,
LIME,
MAGNESIA,
STRONTITES,
YTTRIA,
GLUCINA,
ZIRCONIA.
The EARTHS, which we are to-day to examine, are nine in number:
SILEX,
ALUMINE,
BARYTES,
LIME,
MAGNESIA,
STRONTITES,
YTTRIA,
GLUCINA,
ZIRCONIA.