Impure triphosphate of calcium, obtained by calcining bones to whiteness, and reducing the ash to fine powder.
An air with similar properties was obtained by calcining chalk.
The roasting, or calcining, to get rid of the sulphur, is going on here.
A single tear-drop had power to bring into this calcining oven boiling and desolation.
The best jewellers rouge is prepared by calcining the precipitated oxide until it becomes scarlet.
A factitious article is prepared by calcining a mixture of colcothar and red ochre.
The Peter Spence type of calcining furnace has been followed in a large number of inventions.
But by this method less regulus is produced, than by calcining, or torrefying, and reducing as usual.
Copper is much more expeditiously deprived of its phlogiston by calcining it in a crucible with Nitre.
The calx of Antimony, prepared by calcining it with three parts of Nitre, is therefore deprived of all its phlogiston.