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A block upon which ore is broken up.

colorless liquids, having a weak aromatic odor. They are so called because the typical lactone is derived from lactic acid.

A stone for the lap, on which shoemakers beat leather.

metimes contains also magnesium carbonate, and is then called magnesian or dolomitic limestone. Crystalline limestone is called marble.

A piece of magnetic iron ore possessing polarity like a magnetic needle. See Magnetite.

Same as Loadstone.

Same as Macron.

Amygdaloid.

A sandy calcareous straum, containing, or impregnated with, iron, and lying between the upper and lower Lias of England.

A stone designating a limit or boundary; a landmark. Bacon.

sugar and lime; -- so called because formerly regarded as a polymeric modification of acetone.

An intermediate product formed in the gastric digestion of albuminous matter.

A stone serving the same purpose as a milepost.

One of two circular stones used for grinding grain or other substance. No man shall take the nether or the upper millstone to pledge. Deut. xxiv. 6.

A block of black basalt, found at Dibon in Moab by Rev. F. A. Klein, Aug. 19, 1868, which bears an inscription of thirty-four lines, dating from the 9th century b. c., and written in the Moabite alphabet, the oldest Phonician type of the Semitic alphabet. It records the victories of Mesha, king of Moab, esp. those over…

A single unvaried tone or sound.

A nearly pellucid variety of feldspar, showing pearly or opaline reflections from within. It is used as a gem. The best specimens come from Ceylon.

A species of English granite, used as a building stone.

The ketone of myristic acid, obtained as a white crystalline substance.

Natrolite; -- called also needle zeolite.