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c, Cornea; 1, lens; v.b., vitreous body; r, retina.
H2O (below 15° C.), which on being heated to a dark red heat loses its water of crystallization and leaves a white vitreous mass of the pentoxide.
It is a vitreous greenish blue, as I remember it, like those patches of the winter sky seen through cloud vistas in the west before sundown.
Their lustre is vitreous except when they contain many minute crystals; they are then velvety or even resinous in appearance.
The sealing-wax so treated is electrified negatively or resinously, and the glass with positive or vitreous electricity.