FLUID

adj. and n. Flu2 'i2d. Lat., fluid us (adj.), fluidum (n. [from fluere, to flow]). Fr., fluide. Ger., flii ig (adj.), Flu igkeit (n.). It., Sp., fluido. Having the property of fluidity; as a n., a body whose molecules move easily among themselves, and change their relative positions without lo of cohesion (q. v.) or mutual attraction and repulsion, so that the ma immediately takes the form of a ve el containing it. [B, 21 (a, 27).] Aeriform f. See GAS. Albuminous f. An old term for the serum of the blood. [L, 84.] Allantoic f. See under ALLANTOIC. Amniotic f. See Liquor AMNII. Aqueous f. See Aqueous HUMOR. Burnett's disinfecting f. See BurnetVs DISINFECTANT. Cellular Fs. Fr.,fluides cellulaires. Ger., Flii igkeiten des Zellengewebes. Of Bichat, the lymph and fat of connective ti ue. [J, 146.] Cerebro-spinal f. Lat., fluidum cerebro-spinale, liquor cerebro-spinal is. Fr., liquide cephalo-rhachidien (oil cerebro-spinal), liquide arachno'idien. Ger., Cerebrospinal-Flii igkeit. The liquid in the subarachnoid space and in the coeles or ventricles and central canal of the central nervous system. In man there is direct communication for this liquid between the subarachnoid space and the cerebral ventricles through the foramen of Magendie, and in all the higher animals the fluid extends out with the cranial and spinal nerves in the sheaths of the nerves. It is a form of lymph, and in all animals communicates with the lymphatic system more or le directly. In man the normal amount is supposed to be from 60 to 100 c. c., and probably serves to preserve the cerebral pre ure under varying conditions of blood-pre ure in the brain. Its specific gravity is about 1'005; it does not coagulate spontaneously, as a rule, nor upon the addition of fibrin ferment, hence it is supposed not to contain fibrinogen. It becomes opalescent but does not coagulate by heat. According to Turner, it contains a body which, like glucose, reduces cupric oxide. The composition of the fluid obtained at the second puncture in a case of spina bifid a was, according to Hoppe-Seyler, as follows: Water, 986 88; solids, 13'12; albumin, 2'64; extractives, 2'83; inorganic salts, soluble in water, 7'52; inorganic salts, insoluble. 1'15. [Turner. "Proc. of the Royal Soc.." vii, 1854, 1855, p. 89 (J, 55, 57. 99, 190).]-Ch.vlaqueous f. A f. consisting partly of water and partly of chyle, found in the body cavity of many invertebrate animals (e. g., in annelids, echinoderms, and rotifers). [L, 121.] Crelian f. The cerebro-spinal f. in the central canal of the spinal cord and the ventricles of the brain. [J. 55.] Co3lomic f. The f. or lymph in the ccelomic or pleuro-peritoneal space. [J, 97.] Cohn's f. A solution of 05 gramme each of pota ium phosphate, crystallized magnesium sulphate, and tribasic calcium phosphate, and 1 gramme of ammonium tartrate. in 100 c. c. of distilled water. [A, 510.] Colostric f. See COLOSTRUM. Condy's f. See Condy's DISINFECTANT. Cotunnius's f. See PERILYMPH. Darby's prophylactic f. A solution of pota ium hypochlorite similar to the liquor sodii chlorati of the Br. Ph. [Proctor, " Proc. of the Am. Pharm. A oc.," xvii (a, 14).] Electric f. Lat., fluidum electricum. Fr., fluide electrique. See under ELECTRICITY. Enteric f. See Enteric JUICE. Exudation f. See Coayida.ble LYMPH. F. of Cotnnnius. See PERILYMPH. Formative f. See CYTOBLASTEMA. Galvanic f. Lat., fluidum c/alvanicum. Fr., fluide galvanique. See under ELECTRICITY. Impoiitoo; U2, blue; U3, lull; U4, full; U8, urn; U, like ii (German). [s. 79]