METRYPERTROPHIA 



761 



MICRAXGIUM 



Metrypertrophia (met-ri-per-tro'-fe-ah). Synonym of 



Metrauxe. 

 Metternich-green. See Pigments, Conspectus of. 

 Meyer, Method of. A method of determining the 

 vapor density of a substance. A weighed quantity of 

 the substance is vaporized in an enclosed space, when 

 it displaces an equal volume of air, which is measured. 

 M.'s Tissue-paper Test, a test for color-blindness. 

 If a border of gray paper is placed upon red paper, it 

 appears to have the complementary color of its back- 

 ground (that is, green )r This is particularly apparent 

 when the whole is covered with a sheet of tissue- 

 per. A color-blind man cannot see the comple- 

 :entary color correctly, 

 eynert's Bundle. See M.'s Fasciculus. M.'s 

 Commissure, a bundle of large-sized nerve-fibers 

 extending from the tuber cinereum and the anterior per- 

 orated substance into the optic tract, and terminating 

 in the subthalamic body. M.'s Fasciculus, a fas- 

 ciculus of white nerve-fibers extending between the ha- 

 benular and interpeduncular ganglia. M.'s Fountain- 

 like Decussation, a group of nerve-fibers that arise 

 in the roof of the aqueduct and decussate in the dorsal 

 segment of the raphe. M., Ganglion of. See Gan- 

 lia, Table of. M.'s Granular Formation, the 

 fourth stratum of the cerebral cortex. M.'s Projec- 

 tion System, a plan of the construction of the ner- 

 vous system, whereby it is divided into three sections : 

 The first is composed of the fibers from the cortex of 

 e brain through the corona radiata in a radiate direc- 

 on ; the second, of longitudinal bundles of fibers pro- 

 ng downward to the ganglionic gray matter 

 hing from the third ventricle through the aqueduct 

 f Sylvius to the lowest part of the gray matter of the 

 pinal cord ; the third, the peripheral nerves, motor 

 and sensory, proceeding from the central tubular gray 

 matter. 



ezcal, Mescal (mez-kahP) [Mex.]. An intoxicant 

 spirit distilled from pulque, the fermented juice of 

 various Mexican species of Agave. 

 ezereon, Mezereum (mez-e' -re-on, mez-e' -re-um) 

 Ar., mazariyun, the camellia]. The bark of Daphne 

 reum, a powerful sialogogue and irritant poison, 

 iroducing purging and gastro-enteric inflammation. It 

 used as an antisyphilitic. combined with sarsaparilla, 

 rat chiefly as a local irritant to stimulate indolent 

 leers. M., Ext., used in the preparation of liniment of 

 ustard. M., Ext., .flLther. (B. P.), used externally 

 as a counter-irritant. M., Ext., Fid., used in the 

 preparation of M., Ung., consisting of fld. ext. meze- 

 reon 25 , lard 80, and yellow wax 1 2 parts. 

 Mezizah (mez-P -zah) [Heb.]. The fourth act in the 

 Jewish rite of circumcision. It consists in sucking 

 the bleeding surface in order to secure the salutary in- 

 fluence of the saliva. 



quit (mes-keP) [Sp.]. The tree or shrub Prosopis 

 juliflora of the S. W. United States and Mexico. Its 

 gum resembles gum arabic. 

 Mho (m'o) [anagram of ohm']. The unit of electric con- 

 ductivity ; conductivity at the resistance of one ohm. 

 Miaria >ni-a'-re-ah) [tuapia, defilement]. Synonym 



of Miasm. 

 Miasm, Miasma (mi'-azm, mi-az'-mah) [uialveiv, 

 to pollute : //. , Miasmata'] . A term loosely applied 

 to the floating germs of any form of microbic life, 

 especially those generating in marshy localities. 

 Miasmal (mi-az'-mal) [iiiaaua, miasm]. Containing, 



relating to, or depending upon, miasm. 

 Miasmatic (mi-az-maP -ik) [uiahtiv, to pollute]. Per- 

 taining to or having the nature of miasma. See Con- 

 tagious. M., Contagio-, a term applied to those dis- 

 eases the specific germs of which, after leaving the 



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animal body, undergo a further development before 

 again becoming infectious. Typhoid fever, cholera, 

 yellow fever, and some other diseases, are contagio- 

 miasmatic. M. -contagious. See Contagious. M. 

 Diseases, those diseases produced by infectious causes 

 arising from without the animal body, e.g., malaria. 



Miasmatology (mi-az-mat-ol' '-o-je) [uiaaua, miasm ; 

 /.oyoc, science]. The science or study of miasmata. 



Miasmifuge (mi-az' '-mif-uj)[uiacfia, miasm ; fugere, to 

 put to flight]. Preventing or banishing miasmatic 

 diseases. 



Miasmo-contagious (mi-az' -mo-kon-ta' je-us). See 

 Miasmatic. 



Miasmology (mi-az-moV '-o-je). Synonym of Miasma- 

 tology. 



Mica (mi'-kah) [L., a crumb]. Thin, glossy, trans- 

 parent scales, composed of aluminum silicate. M. 

 panis, crumb of bread ; used in pharmacy. 



Micaceous (mi-ka' -she-us) [mica, crumb]. Resembling 

 mica ; composed of crumbs ; friable. 



Mication (mi-ka' -shun) \micare, to glitter]. Quick 

 motion ; a winking ; systolic contraction. 



Micella (mi-sel'-ah) [dim. of mica, & crumb, grain ; //., 

 Micella], In biology, according to Nageli's theory, 

 one of the fundamental structural units of organized 

 bodies. He defines it as "a minute crystal , micro- 

 scopically invisible, consisting of a larger or smaller 

 number of molecules, and, when turgid, surrounded 

 by a layer of water.'' Weismarm does not accept this 

 as corresponding to his "biophore." 



Micellar (mi-seP-ar) [micella, dim. of mica, crumb]. 

 Relating to a micella. M. Aggregate, a number of 

 micellae united together. 



Michel's Diplococcus. The micrococcus found in con- 

 tagious conjunctivitis. See Bacillus of Conjunctival 

 Catarrh, under Bacteria, Synonymatic Table of . M.'s 

 Paste, a caustic paste composed of asbestos one 

 part, and concentrated sulphuric acid three parts. 



Micheli's Placenta. The sporangium of certain fungi, 

 as, for instance, those that give rise to otomycosis. 



Michelia (mi-ke' -le-ah) [after P. A. Micheli, an Italian 

 botanist]. A genus of magnoliaceous plants. M. 

 champaca. See Champak. 



Michigan Itch. Same as Army Itch. M. Method, a 

 method of Artificial Respiration. The individual is 

 placed on his face, the operator astride of the body. 

 The shoulders are then raised as high as they can go, 

 without the head leaving the floor, and this position is 

 maintained while the operator counts three. The body is 

 then allowed to return to the ground. Pressure is then 

 made downward and inward on the lower ribs while 

 two is counted. The operator then repeats the first 

 series of movements. 



Micology (mi-koP -o-je). See Mycology. 



Micracoustic (mi-krah-kow / -stik) [fiinpSc, small ; axovo- 

 riKoq, pertaining to hearing]. Hearing, or assisting in 

 hearing, very small sounds. 



Micra^sthetes (mi-kres'-thets) \juKp6c, small ; alodrioiq, 

 sensation]. In biology, small knob-like sense-organs 

 found by Moseley in the micropores of certain Chi- 

 ton ida. 



Micraine (mik'-rdn). Synonym of Migraine. 



Micranatomy (mi - kran - at'-o- me) [ttiKpSc, small ; 

 a va-outj, a cutting up]. Minute anatomy; histology. 



Micrander (mi-kran' '-der) [fuxpoc, small; avijp, male]. 

 In biology, a small male plant. 



Micrane (mik / -rdn). Synonym of Migraine. 



Micrangiopathy (mi-kranje-op' -ath-e) \junp6c, small ; 

 ~<rv, vessel ; tzoOo^, disease]. Disease of the cap- 

 illaries. 



Micrangium (mi-kran' -je-um) [umepoe, small ; ayyiiav, 

 vessel]. Capillary. 



