BULB

n. Bulb. Gr., BoABés. Lat., bulb us. Fr., bulbe. Ger.. Knollen, Zwiebel, Kolbe. “it., Sp., bulbo. 1. In general, any rounded, more or le spherical or ovoid body, whether solid or hollow. 2. In botany, an abbreviated, more or le globular plant-axis enveloped above by an aggregation of fleshy leaves (a leaf-bud) and hearing roots below, also a swollen portion of the pedicle of certain Fungi. {A, 801; B, 19, 270.]—Aortie b._ Lat., bulb us aorte. Fr., bulbe aortique. r. Aortenzwiebel. The expanded initial portion of the aorta; in embryology, the aortic (or primitive arterial) stem (see Arterial b.); in comparative anatomy, a bulbous enlargement of the cardiac aorta which contains striped muscular fibres and contracts rhythmically: [L, 11.J—Arterlal b. Fr., bulbe artériel. Of the embryonic heart, the anterior portion, which by division gives rise to the aortic and pulmonary stems.’ [L, 12) Auditory b. Fr., bulbe audit if. An obsolete term for the cochlea and the membranous labyrinth taken together. [A, 885; L, 49.]— Brachlal b., Brachio-rhachidian b. The cervical enlargement of the spinal cord at the point where the nerves forming the brachial plexus are given off. [L, 13.]—B.-axis. A plant-axis consisting of a b. [B, 75.]—B. of a hair. See Harr-BurB.—B. of a tooth. See Tooth-PuLP.— B. of Rouget. See B. of the ovary (2d def.)—B. of the corpus caver no sum. Lat., bulb us ris cavernosi penis. An enlargement of the crus of the corpus caver no sum at the root of the penis. [C; L, 142.|—1. of the corpus spongiosum. See B. of the urethra.—B. of the eye. Lat., bulb us oculi, Fr., bulbe de Vail. Ger., be A The eyeball. |F.]—B’s of the female. See BuLBI vestibuli vagine.—L. of the fornix. See SPLENIVM.—B. of the olfactory nerve. Sce Olfactory b.—13. of the ovary. Fr., bulbe (ou portion bulbeuse) de l’ovaire. 1. The hodî‘ or internal part of the organ, as distinguished from its glandular exterior. [A, 15.] 2. A plexus of blood ve els contiguous to the attached border of the ovary and extending between the folds of the broad ligament of the uterus. [A, 385.] —B's of the plantar cushlon. In the solipeds, two lateral bulbous expansions at the base of the plantar cushion. [L, 13.]—B. of the spinal cord (or marrow), See MEnuLLA oblong at a.—B. of the urethra. Lat.,bulb us urethra. Fr.,bulbe de l’urèthre. G Harnrährenzwiebel, Wulst der Harnréhre, See ALCHORNEA The Clavaria Bushy. [L, 180.] As a species name, [B, 172.] [B, 172.] À bulbons expansi of the proximal end of the corpus spongiosum urethræ, divided more or le distinetly into two lobes behind. [C; I, 142.]—B3*s of the vagina, 13s of the vestibnie. See BuLBI vestibuli vagine. ion —B.-tuber. See BuLsonium.—Central b. The core of a terminal nerve-corpuscle, [Krause, ‘* Arch. £. mikr, Anat.,” 1881, p. 53 (J).J—Coated b. See Tunicated b.—Crural b. The lumbar enlargement of the spinal cord. [L, 13.]—Cylindrical_end-b’s. See under Env-nvre.—Dental b. Fr., bulbe dentaire. See Tooth- ©, no; 0%, not; 02, whole; Th, thin; Th* the; U, like oo in too; U2, blue; U%, lull; U4, full; US, urn; US, like ü (German). PuLe.—End-b. See the major list—Feather-b. Fr., bulbe plumigéne. The papilla of a feather-follicle. [A, 885.]—Fornix-b. See B. of the fornie—Four. See CoRPoRA quadrigemina.— Gustative b’s, Gustatory b’s. See Taste-suns—Hair-b. See the major list.—Krause’s. See Krause’s enp-BuLBs.—Liebig’s potash b’s. A device Gms of a number of b's blown ina gla tube bent intoa triangle, containing a strong solution of pota ic hydrate, for the par se of absorbing carbonic anhydride in the quantitative estimation of carbon and hydrogen in elementary organic analysis. The gas first displaces the solution from the larest b., and then pa es in bubles through the others. [A, 3.J— Lumborrhachidian b. See Crural b.—Naked b. A b, (in the botanical sense) with loose, separable scales, [B, 19.—Nerve-b. See the major list.—Olfactory b. Lat., bulb us olfact or i us. Fr., bulbe Chae Ger., Riechkolben. Syn.: rhinencephalon. An oblong body, consisting almost entirely of pray matter, resting on the cribriform plate of the ethmoid bone, through the perforations of which it sends down nerve-filaments from its lower surface to enter the nose. [L 15; K.]—Pharyngeal b. Fr., bulbe pharyngien. Syn.: mastax. An enlargement of the pharyngeal portion of the alimentary canal of certain molluses,. usually provided with chitinous plates or proce es. [L,158.]}—Poison-b. See BUPHANE toxic aria. —Post cornual b. See BuLBUs cornu posterior is.—Proximal b. Of a cilium of a ciliated cell, that portion which is next the cell and connected with it by the intermediate segment. [Engelmann (J).J—Rhachidian b. Fr., bulbe rhachidien (ou de la moelle épin iére), See MEDULLA oblong at a.—Sealy b. Lat., bulb us squamosus. Fr..bulbe à écailles, In botany, a subterranean b. giving off roots below and scaly buds above. TA, 301, 385.]—Solid b. A corm, [B, 19.]—Specifie-gravity b. A hydrometer (q. v.) of variable immersion. [A, 376.]—Taste-b’s. Taste-aups.—Terminal nerve-b. See NERVE-BULB.—Tonsillar. See BULBI tonsil lares.—Tunicated b. Lat., bulb us tunic at us. Fr., bulbe à tuniques. In,botany, a b. the outer scales of which are thin and membranaceous an Cy envelop the b., forming concentric layers. [B, 19, 270.]—Vaginal b’s, Vestibular b’s. See BuLBI vestibuli vag inæ, BULB A CEO US, adj. Bu®lb-a’shu%, Bulbous (q. v.).