CHAMBER

n. Cham'bu5r. Lat., camera (from ica/napa, a vault). Fr., chambre. Ger., Kammer. It., camera. Sp., Port., camara. An inclosed space. Album in i parous c. In birds, that portion of the oviduct in which the ovum receives its covering of albumen. [L, 133.] Anterior c. of the eye. Fr., chambre anterieure de roeil. Ger., vordere Augenkammer. The anterior portion (practically the whole) of the aqueous c. of the eye, bounded behind by the iris and the central portion of the crystalline lens (in the foetus, before the seventh month, by the pupillary membrane). [A, 5.] Aqueous c. of the eye. The space or c. in the eye bounded by the cornea in front and the ciliary proce es, suspensory ligament, and lens behind. It is divided into two very unequal parts by the iris, the pupil forming the channel of communication between the anterior and posterior portions. It is filled by the aqueous humor. [F.] Atrial c. In the Tunic at a, the atrium. [L, 147.] Barometric c. Fr., chambre barometrique. The space above the mercurial column of a barometer. [B; L, 49.] Brain-c. The cranial cavity. [L, 121.] Branchial c's. Fr., chambres bronchioles. In the Crustacea and in fishes, the cavities containing the branchiae. [L, 11.] Calciparous c. In birds, the uterus; i. e., that portion of the oviduct in which the chorion becomes calcined, forming the shell. [L, 133.] C's of the eye. See Anterior c. and Posterior c. Ciliated c's. Fr., corbeilles vibratiles. Small dilatations of the incurrent and excurrent canals of sponges, lined with ciliated cells the cilia of which maintain a constant circulation of water. [L, 12.] Enteroccele c's. See Inter mesenteric c's. Gas c. Fr., chambre a gaz. In microscopy, an arrangement by which a current of gas may be pa ed over the object examined; usually made with a ring of putty on a slide, closed with a cover-gla and having inlet and outlet tubes pa ing through the putty. [L, 318.] Gill c's. See Branchial c's. Infra branchial c. That one of the two divisions of the pallial cavity of the Lamellibranch i at a formed by the inward projection of the branchial apparatus, which is connected with the branchial siphon or inhalant aperture. [L, 11.] Inter mesenteric c's. In the Octocoralla, the spaces between the mesenteries or membranous laminee which project into the general cavity. [L, 121, 147.] Laryngeal c. The cavity of the larynx. [L.] Liaryiigo-tracheal c. In certain Amphibia, a cavity which represents the larynx and trachea of the higher vertebrates. [L, 300.] Lethal c. A humane device proposed by B. W. Richardson for putting animals to death by confining them in an atmosphere of narcotic gas or vapor. [" Asclepiad," Jan., 1885, p. 65.] Lingual c. The cavity of the mouth. [L.] Mantle-c. See Sub pallial c. Moist c. Fr., chambre humide. In microscopy, a cell so arranged that the air contained within it may be kept charged with moisture. [L, 318.] Pallial c. See Pallial CAVITY. Posterior c. of the eye. Fr., chambre posterieure de Vo . Ger, hintere Augenkammer. That portion of the aqueous c. of the eye that lies behind the iris and. in the foetus before the seventh month, the pupillary membrane. Except at its periphery it is imaginary as the iris lies in contact with the capsule of the lens. [A, 5 B ] A, ape; A", at; A3, ah; A4, all; Cli, chin; CU", loch (Scottish); [s. 200]