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Failing in this, he found what till then was unknown, that sulphuret of baryta would "absorb the sun's rays by day, to emit them by night."

Of or pertaining to an alkali or to alkalies; having the properties of an alkali. ÷ earths, certain substances, as lime, baryta, strontia, and magnesia, possessing some of the qualities of alkalies.

In the eastern part of Kentucky there are well-defined deposits of lead-bearing baryta, though, up to date, their development has not proved successful.

Binoxide of Barium, BaO2, is made by subjecting the oxide or caustic baryta, BaO, to a stream of oxygen or common air at a high temperature.

The earths were gradually distinguished from each other; lime was recognized as a substance distinct from baryta, baryta as distinct from alumina, etc.