CLAY n.
earth; lifeless; inanimate. -- Clay ironstone, an ore of iron consisting of the oxide or carbonate of iron mixed with clay or sand. -- Clay marl, a whitish, smooth, chalky clay. -- Clay mill, a mill for mixing and tempering clay; a pug mill. -- Clay pit, a pit where clay is dug. -- Clay slate (Min.), argillaceous…
CRYSTAL n.
Compound. -- Iceland crystal, a transparent variety of calcite, or crystallized calcium carbonate, brought from Iceland, and used in certain optical instruments, as the polariscope. -- Rock crystal, or Mountain crystal, any transparent crystal of quartz, particularly of limpid or colorless quartz.
DOUBLE a.
lybasic acid which has been saturated by different bases or basic radicals, as the double carbonate of sodium and potassium, NaKCO3.6H2O. (b) A molecular combination of two distinct salts, as common alum, which consists of the sulphate of aluminium, and the sulphate of potassium or ammonium. -- Double shuffle, a low,…
GREEN a.
looper (Zoöl.), the cankerworm. -- Green marble (Min.), serpentine. -- Green mineral, a carbonate of copper, used as a pigment. See Greengill. -- Green monkey (Zoöl.) a West African long-tailed monkey (Cercopithecus callitrichus), very commonly tamed, and trained to perform tricks. It was introduced into the West In…