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Any bryozoan of the genus Lunulites, having a more or less circular form.

A variety of pyroxene.

A variety of marl.

A thin, laminated variety of serpentine, usually of a pale green color.

A mineral occurring in small yellow crystals, found in the lavas (melilite basalt) of Vesuvius, and elsewhere. [Written also mellilite.]

A mineral of a honey color, found in brown coal, and partly the result of vegetable decomposition; honeystone. It is a mellitate of alumina.

See Opal.

A zeolitic mineral, grayish white or yellowish, occuring in delicate groups of crystals, also fibrous massive. It is a hydrous silicate of alumina, lime, and soda.

A product of metabolism; a substance produced by metabolic action, as urea.

A meteoric stone; an aërolite; a meteorite.

A metropolitan. Barrow.

A rare mineral of resinous luster and high specific gravity. It is a tantalate of calcium, and occurs in octahedral crystals usually very minute.

The same Milliolitic. Miliolite limestone (Geol.), a building stone, one of the group of the Paris basin, almost entirely made up of many-chambered microscopic shells.

A measure of capacity in the metric system, containing the thousandth part of a liter. It is a cubic centimeter, and is equal to .061 of an English cubic inch, or to .0338 of an American fluid ounce.

Native sodium sulphate; Glauber's salt.

A monopolist. Sylvester.

One of an ancient sect who held that Christ had but one will as he had but one nature. Cf. Monophysite. Gibbon.

A metric measure of capacity, containing ten thousand liters. It is equal to 2641.7 wine gallons.

A zeolite occuring in groups of glassy acicular crystals, and in masses which often have a radiated structure. It is a hydrous silicate of alumina and soda.

A fossil nautilus.