ANGLE

n, A?n?gl. Gr., yovia, ayxvdn. Lat., angulus. Fr., angle. Ger., Winkel. It., angolo. 'Sp., dugulo. Î. The degree of divergence of two straight lines or two planes which meet each other or would meet if sufficiently faa sisal 2. A corner, a point at which two or more edges or sides of an object or the wails or boundaries of a cavity or opening meet; an abrupt bend.—Acromial æ A so-called a. formed by the clavicle and the head of the os brachii. The term was used by Walshe simply for convenience in description. [L, pod ay cola Fr., a. alvéolaire. Ranke’s term for the a. formed by the intersection of the cephalic horizontal line (of the Germans) and a line extending from a point just beneath the nasal spine to the most prominent point of the lower edge of the alveolar proce es of the upper jaw. [* Rev..,” 1884 (L).|—Alveolo-condylar a. See Orbito-alveolo-condylar a. —A.a,A.alpha. Fr.,a.a. Ger., Winkel. It., angolo a. Sp., dnguloa. The a. (of 5°) formed by the visual line ‘and. the axis of the cornea. [F.]—A. a’. Fr.,a. a’. Ger., Winkela’. It., angolo a’, Sp., éngulo a’. The a. formed with the visual line, and on the other side of it, by a perpendicular let fall upon the centre of the cornea. [F.]—A. antérieur de l’os iliaque (Fr.). See External a. of the ilium.—A. basilaire de la mâchoire (Fr.). The a. formed at the s eyes inenti by two lines running one from each gonion. [L, 143.]—A. costal (Fr.). See À. of a rib.—A’s craniens (Fr.). See Cephalic a’s,—A. cranioscopique de Walther (Fr). See Internal a. of Walther.—A. de Camper (Fr... See Facial a. of Camper.—A. (Fr.). Sphenoidal a.—A. de Fick (Fr.), An a. having its apex at the basion, formed by the plane of the basilar groove and a line running from the lower border of the symphysis ment i to the basion. |L, 150,J—A. de flexion cranienne (Fr.). Syn.: a. par iétal. Ana. in the embryo at the point of junction of the mesencephalon and the diencephalon. [I, aay de la fo e olfactive (Fr.). An a. formed in the lower animals by the jugum sphenoid ale and the inclination of the olfactory fo a. [L, 150.|—A. de la lame criblée (Fr.). The a. made by the cribriform plate of the ethmoid and the olfactory fo a. [L, 150.]—A. de la nuque (Fr.). 1. A flexure of the cerebro-spinal axis of the foetus at a point near the fourth ventricle. [I.28.] 2. The a. of the nucha (q. v.)._ [A, 385.J—A. de la protubérance (Fr.). Syn.: a. du pont de Varole. An a. of flexion in the embryo at a oint corresponding to the site of the pons Varolii. [I, 28,J—A. de a selle turque (Fr.). See Sphenoidal a.—A. de l’œil (Fr.), See ANGULUS oculi.—A. de Louis (Fr.). See ANGULUS Ludovici.—A. (Fr.). See Sphenoidal a—A. des condyles (Fr.). See Sphenoidal a.—A. des lévres (Fr.). See ANGULUS or is.—A. d’uné côte (Fr.). See A. of a rib.—A. du pont de Varole (Fr.). See A. de la protubérance.— A. du profil (Fr.). Ger., Profilwinkel. ‘The facial a. of the Germans; an a. formed by the union of a line extending between the superior border of the external auditory meatus and the lower border of the orbit, and a line running from the naso-frontal suture to the most prominent point of the lower edge of the superior alveolar proce es. [L. 150.] Cf. A. of Lavater-—A. du _ pubis (Fı See A. of the pubic bone.—A. externe de Voll (Fr.), See ANGULUS oculi extern us—A. facial alvéolaire, A. facial alvéolaire zoologique (Fr.). A facial a. with its apex at the alveolar point. [Broca, * Rev.., 1875 (L).] See diagram.—A. facial dentaire (Fr.). A facial a. with its apex at the point of contact of the cutting eae of the upper central incisor teeth. [Broca, ‘* Rey..,” 1873 tay Cf. Fı cial a, of Camper.—A. facial maximum (Fr.). A facial a, with its apex at the subnasal point. [L. 143.|—A. facial minimum (Fr.). See A. facial dentaire.—A. facial moyen (Fr.). A facial a. with its apex at the alveolar point. [Topinard, “ Rev..,” 1873 (L).|—A. facial zoologique (Fr.). The facial a. of Clomet, [L, 149.]—A. y, A. gamma. Fr., a. y. Ger., Winkel y. t., angolo p., dngulo y. Thea. formed at the centre of rotation of the eye by the optic axis and a line drawn from this centre to the object looked at. |F.|—A. goniaque (Fr.). The a. of the lower jaw. [L.]—A. interne de l’æœil (Fr.). See ANGULUS oculi intern us.—A. limite (Fr.). See Limiting a.—A. louchant (Fr.). See Squinting a—A. occipital sous-iniaque (Fr.). See Suboccipital a.—A. occipital sus-iniaque (Fr.). See Supra-occipital a.—A, oculaire (Fr,).—See Optic a., ANGULUS oculi, and CANTHUS. —A. of aberration. See A, of der i at i on.—A. of aperture. The a. included between two lines running from opposite points of the periphery of a lens to the focus. fA, 432.)—A. of a. rib. Lat., angulus costæ, Fr.,a. d'une côte. Ger., Winkel einer Rippe. The sharp turn taken by a rib in its rior portion at a point corresponding to the outer edge of the erector spinæ muscle. [C; L, 142.] To be distinguished from the subcostal a. (g. v.).—A. of Daubenton. An a. formed by the intersection at the opisthion of two lines running one from the basion and the other from the inferior border of the orbit. [Bertillon (L, 87), L, 143.|—A. of deviation. Fr., a. de déviation. Ger., Abweichungswinkel. It., angolo di dev i azione. Syn.: a. of aberration, 1. In optics, the a. between a refracted ray and the prolongation of the incident peeyond the point of incidence; ë. e., the a. between the path which the ray would take if not refracted and that which it actually does take, [B.] 2. The a. through which a galvanometer-needle or the needle of a compa is made to move by the action of soine disturbing force. [B.]—A. of divergence. Fr., a. de divergence. In botany, the a. between two succe ive le: n a spiral or a whorl. [A, 885.]—A. of elevation. Fr., a.. Ger., Erhebungswinkel. It., angolo d'elevazione. Sp.,dngulo de elevaciôn. The a, made by the visual plane, in movements of this plane upward or downward, with the primary position of the same plane. [F.|—A. of incidence. Fr., a.. Ger., Einfallswinkel. The a. which a ray of light or a sound-wave makes with the perpendicular toa surface at which it undergoes reflection or refraction. ES A. of inclination of the pelvic canal. Ger., Neigungswinkel des Beckenkanals, Kiwisch's term for the a. formed by the anterior wall of the pelvis with the conjusate diameter. [A, 20.] To be distinguished from the a. of inclination of the pelvis (g. v.). —A. of inclination of the pelvis. Ger., Neigungswinkel des Beckens, Thea. formed by the pelvis with the general line of the trunk; usually reckoned as the a. formed by the plane of the outlet with the horizon. To be distinguished from the a. of inclination of the pelvic canal (q. A. of inflexion. Fr., a. CR ee Ger.. Eckstrebenwinkel. It., angolo d’inf le i one. In veterinary an at- ‘omy, the a. formed by the uarter of the hoof of a sod with the commencement of the bar; the so-called * buttre ,” or “heel,” of the foot. [L, 13, 44.J—A. of Landzert. An a. included between the plane of the basilar groove and the horizontal line of the juum sphenoid ale. [L, 150,]— i of Lavate It., angolo di profilo. The a. included between a line drawn from the point of the nose to the outer a. of the eye and a line running from the point of beginning to the a. of the mouth, opposite the first molar tooth. According to Lavater, the greater the a. the more intelligent the individual. {L, 44.|—A. of obliquity of the femur. The a, formed by the shaft of the femur with a vertical line, [L, 149.]—A. of polarization. Fr., a. de polarisation. Ger., Polarisationswinkel. ‘That a. of reflection (varying with the nature of the reflecting substance) at which light is most completely polarized. The following table shows the a’s of polarization of various media: