Page:Theophrastus - History of Stones - Hill (1774).djvu/271

 Perrhæbeans, and many other Places; but thee are of a peculiar Kind, and are rather of a tony, than of an earthy Texture.

CXII. The Stone from which Gypum is made, by burning, is like Alabater; it is not dug, however, in uch large Maes, but in eparate Lumps. Its Vicidity and Heat, when moitened, are very wonderful.