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A membranaceous or calcareous septum with which some mollusks close the aperture of the shell during the time of hibernation, or æstivation.

See 2d Calcar, 3 (b).

A small, lenticular, calcareous body, esp. an operculum of a small shell of the family Tubinid, used to remove a foreign sub stance from the eye. It is rut into the inner corner of the eye under the lid, and allowed to work its way out at the outer corner, bringing with the substance.

An extensive order of rhizopods which generally have a chambered calcareous shell formed by several united zooids. Many of them have perforated walls, whence the name. Some species are covered with sand. See Rhizophoda.

in appearance; specifically, in homeopathy, calcium sulphide, called also hepar sulphuris calcareum ( Hepar antimonii ( (Old Chem.), a substance, of a liver-brown color, obtained by fusing together antimony sulphide with alkaline sulphides, and consisting of sulphantimonites of the alkalies; -- called also liver of ant…

pus major or simply hippocampus. The smaller, hippocampus minor, is called also ergot and calcar.

The substance which has entered the pores or cavities of a body. Addison. Calcareous infiltrations filling the cavities. Kirwan. Fatty infiltration. (Med.) See under Fatty. -- Infiltration gallery, a filter gallery.

obster; -- so called from a fancied resemblance to a seated female figure. It consists of calcareous plates. Ladies' man, a man who affects the society of ladies. -- Lady altar, an altar in a lady chapel. Shipley. -- Lady chapel, a chapel dedicated to the Virgin Mary. -- Lady court, the court of a lady of the manor.…

percoid fishes, of which one species (Lates Niloticus) inhabits the Nile, and another (L. calcarifer

A sac containing small, calcareous concretions (otoliths). They are found in many Medusæ, and other invertebrates, and are supposed to be auditory organs.

tlike organism, as the gorgonians, corals, and corallines, esp. those gorgonians having a calcareous axis. All the lithophytes except the corallines are animals.

Any one of several species of fringilline birds of the genus Calcarius (or Plectrophanes), and allied genera. The Lapland longspur (C. Lapponicus), the chestnut-colored longspur (C. ornatus), and other species, inhabit the United States.

nate of lime, clay, and sand, in very varivble proportions, and accordingly designated as calcareous, clayey, or sandy. See Greensand.

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

anchial or a pulmonary cavity. They are generally more or less covered and protected by a calcareous shell, which may be univalve, bivalve, or multivalve.

One of numerous small calcareous structures forming the skeleton of certain echinoderms, as the starfishes.

One of the small bones or particles of calcareous or other hard substance in the internal ear of vertebrates, and in the auditory organs of many invertebrates; an ear stone. Collectively, the otoliths are called ear sand and otoconite.

One of several upright slender calcareous processes which surround the central part of the calicle of certain corals.

To become stone, or of a stony hardness, as organic matter by calcareous deposits.

A small calcareous concretion formed in a vein; a vein stone.