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ivisions of the Jurassic period; a name given in England and Europe to a series of marine limestones underlying the Oölite. See the Chart of Geology.

um; the white or gray, caustic substance, usually called quicklime, obtained by calcining limestone or shells, the heat driving off carbon dioxide and leaving lime. It develops great heat when treated with water, forming slacked lime, and is an essential ingredient of cement, plastering, mortar, etc.CaO…

A kiln or furnace in which limestone or shells are burned and reduced to lime.

Any one of several species of bivalves, which form holes in limestone, in which they live; esp., any species of the genus Lithodomus.

lied to the mussels, and remarkable for their ability to bore holes for shelter, in solid limestone, shells, etc. Called also Lithophagus.

aphy; made by lithography; as, the lithographic art; a lithographic picture. Lithographic limestone (Min.), a compact, fine-grained limestone, obtained largely from the Lias and Oölite, esp. of Bavaria, and extensively used in lithography. -- Lith`o*graph"ic*al*ly, adv.

il from adhering to wetted parts of the stone not covered by the design. See Lithographic limestone, under Lithographic.

A variety of black limestone, often polished for ornamental purposes.

A grayish brown limestone, containing fossil shells, which reflect a beautiful play of colors. It is also called fire marble, from its fiery reflections.

Pertaining to, characterized by, or containing, magnesia or magnesium. Magnesian limestone. (Min.) See Dolomite.

A massive, compact limestone; a variety of calcite, capable of being polished and used for architectural and ornamental purposes. The color varies from white to black, being sometimes yellow, red, and green, and frequently beautifully veined or clouded. The name is also given to other rocks of like use and appearance,…

The metamorphism of limestone, that is, its conversion into marble. Geikie.

been more or less recrystallized by heat, pressure, etc., as in the change of sedimentary limestone to marble. Murchison.

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.

. -- Mountain licorice (Bot.), a plant of the genus Trifolium (T. Alpinum). -- Mountain limestone (Geol.), a series of marine limestone strata below the coal measures, and above the old red standstone of Great Britain. See Chart of Geology. -- Mountain linnet (Zoöl.), the twite. -- Mountain magpie. (Zoöl.) (a) The…

A kind of shell limestone, whose strata form the middle one of the three divisions of the Triassic formation in Germany. See Chart, under Geology.

embracing the Medina, Clinton, and Niagara epoch. The rocks of the Niagara epoch, mostly limestones, are extensively distributed, and at Niagara Falls consist of about eighty feet of shale supporting a greater thickness of limestone, which is gradually undermined by the removal of the shale. See Chart of Geology.…

a substance having a grayish white color, occuring in efforescences on old walls, and in limestone caves, especially where there exists decaying animal matter.

A variety of limestone, consisting of small round grains, resembling the roe of a fish. It sometimes constitutes extensive beds, as in the European Jurassic. See the Chart of Geology.

Designating, or pertaining to, certain beds, chiefly limestone, characteristic of the latest period of the Silurian age. Oriskany period, a subdivision of the American Paleozoic system intermediate or translational in character between the Silurian and Devonian ages. See Chart of Geology.