MOTORIAL 



786 



MOUNTING 



tion of the cerebral gyri in each hemisphere surround- 

 ing the central fissure, viz. : the precentral and post- 

 central gyri bordering the fissure, the posterior part of 

 the three frontal gyri, and the paracentral lobule on the 

 mesal surface of the hemisphere. Stimulation of this 

 region by a weak faradic current induces movement 

 in definite parts of the opposite half of the body. M. 

 Ataxia. See Ataxia. M. Cell, a nerve-cell generat- 

 ing motor impulses. M. Centers. See Center. M. 

 Fibers, centrifugal nerve-fibers exciting contraction 

 of muscles. M. Impulse, the nerve-influence that 

 results in action. M. Nerves, those efferent nerves 

 that carry impulses to the muscles. M. oculi. See 

 Nerves, Table of. M. Path, the path traversed by 

 a motor impulse, from the brain to the muscles. M. 

 Points, the points on the surface of the body where 

 the various branches of the motor nerves supplying 

 the muscles may be affected by electricity. See Cuts of 

 Motor-points, pp. 784-785. M.Vaso-. SeeVaso- motor. 



Motorial [nw-to 1 '-re-al) \_motorius, motory]. Of or 

 pertaining to motion. M. End-plate, an eminence 

 of protoplasm within the sarcolemma where a nerve- 

 fiber pierces the latter. It is produced by a spreading 

 out of the axis-cylinder. 



Motorium (mo-to' '-re-um) [movere, to move]. The 

 motor apparatus of the body, both nervous and mus- 

 cular, considered as a unit. 



Motory (mo'-tor-e) \jnovere, to move]. Same as Motor. 



Motosis (mo-to' -sis) \_fiorog, lint]. A lint-dressing. 



Motricity (ino-tris' -it-e) \jnovere, to move]. Motor 

 neuricity ; the efferent motor impulse sent along a 

 nerve. 



Motschutkowski's Method. See Treatment. 



Mottle (mot'-l) [ME., motteleye, a mixture of colors]. 

 To mark with spots or blemishes. 



Mottled (mot' -Id) [ME., motteleye, a mixture of colors]. 

 Spotted ; marked with patches of dark color ; varie- 

 gated. M. Kidney. Same as Large White Kidney. 



Mottling (mot' -ling) [ME., mottleye, a mixture of 

 colors]. A spotted condition. 



Mouches volantes (tnooshvo-lonf) [Fr.]. See Musaz 

 volitantes. 



Mouilla (moo-il'-ah). An excellent liquid potash soap 

 containing a large percentage of glycerin. It is employed 

 in dermatology, and is useful in the treatment of come- 

 dones and for cleansing purposes. It does not contain 

 enough fat for use on the face. 



Mould, Mold {mold). See Mold and Fungus. 



Moulding-flask. A flask invented for obtaining cast- 

 ings from plaster models, which, on account of irregu- 

 larity of the teeth or projection of the alveolar border, 

 cannot be drawn from a simple impression in sand. 



Mounding (mown'-ding) [ME., mound, a protection]. 

 The rising in a lump of muscle-fibers when struck by 

 a slight, firm blow. It is observed in the thin and 

 feeble, and in certain diseases, as pulmonary tuber- 

 culosis and advanced locomotor ataxia. See Myoidcma. 



Mount (mownt)\W&, mount, a mountain]. In palmistry, 

 a fleshy cushion in the palm of the hand. M. of Jupi- 

 ter, the name given to the eminence at the root of the 

 index finger. M. of Mars, the name given to the 

 upper part of the hypothenar eminence. M. of Mer- 

 cury, the name given to the eminence at the root of 

 the little finger. M. of the Moon, the name given to 

 the lower part of the hypothenar eminence. M. of 

 Saturn, the name given to the eminence at the root 

 of the middle finger. M. of the Sun, the name 

 given to the eminence at the root of the ring-finger. 

 M. of Venus, a name given in palmistry to the thenar 

 eminence. 



Mountain (moivn' -ten) [ME., mountaine, mountain]. 

 A high elevation of land. M. Anemia. See Anky- 



lostomiasis. M. Balm. See Eriodiclyon. M.-blue. 

 Same as Azurite. M. -climbing. See Terrain-cure. 

 M. Fever, a synonym of Typhoid Fever, q. v. M.- 

 green. Same as Brunswick Green and Malachite 

 Green. M. Laurel. See Kalmia M. Sage. See 

 Sierra Salvia. M. Sickness, symptoms consequent 

 upon the ascent to high altitudes, consisting of debil- 

 ity, vomiting, tremulousness, headache, loss of mus- 

 cular power, etc. See Anox'ysmia, Hypsonosus, 

 Mareo. M. Tea, a popular name for Gaultheria pro- 

 cumbens, q. v. 



Mountaineering Malady. See Mountain Sickness. 



Mountebank (mown'-te-bank) [It., montambanco, 

 mountebank]. A quack who prescribes and sells 

 medicines and nostrums in public places. Also 

 called Quacksalver. 



Mounting (mown' '-ting) [ME., mounten, to mount]. In 

 microscopy, the arrangement of a microscopic object 

 upon some suitable support (slide) and in some suit- 

 able medium. M.-cell, in microscopy, a ring of 

 card-board, metal, or rubber, for the support of the 

 cover-glass, or to prevent the mounting-medium from 

 spreading when the object is thick. M. -media, va- 

 rious fluids, or resins in the fluid state, afterward be- 

 coming solid, that are employed in the examina- 

 tion and temporary or permanent preservation of mi- 

 croscopic objects. See also Stains, Table of. The 

 most important are as follows : Acetate of Copper, 

 for preserving and mounting green algae. Acetate of 

 copper I grm, glacial acetic acid 1 c.c , camphor- 

 water 250 c.c, glycerin 250 c.c, corrosive subli- 

 mate 4 grms. The glycerin is sometimes omitted 

 with advantage, as in the case of volvox. Acetati: OP 

 Potassium, used in a strongly concentrated solution ; 

 it behaves much as glycerin, but does not dry at the 

 edges and is less refractive. Benzol, employed 

 as a solvent for Canada balsam and in preparing 

 objects for balsam-mounts, but unfit for use as a me- 

 dium for preliminary examination, on account of 

 its great volatility. Bergamot, Oil of. Schieffer- 

 decker first recommended this oil as a clearing-agent 

 and mounting-medium ; it clears 95 per cent, alcohol , 

 preparations and celloidin preparations, and dor 

 attack anilin colors. Canada Balsam. This should 

 be deprived of certain volatile products before using. 

 Solutions free from chloroform are to be preferred, es 

 pecially for bacteria. Baumgarten recommends equal 

 parts of Canada balsam and oil of cloves. Pure xylo 

 answers equally well. Owing to the high refractive 

 index of Canada balsam (1.53), bacteria are poorh de 

 fined in it. Carbolic Acid. One of the best 1 

 for clearing and temporary examination of tissu 

 is best used in concentrated solution in alcohol, whei 

 it clears instantaneously even very watery pi 

 tions. For clearing sections imbedded in celloidin. us 

 a mixture of xylol and carbolic acid in equal parts 

 Caustic Potash. A very useful clearing-agent in mod 

 erately strong (5 per cent.) solutions, for the exatnim 

 tion of plant-sections. If sections are to be perman 

 mounted, they should be washed in water, pa 

 through dilute alcohol, and mounted in glycerin 

 DAR-OIL. On account of its refractive index. 

 resembles that of crown-glass ; this is the 

 widely-used fluid for homogeneous immersion ol 

 jectives. It is miscible with chloroform-balsan 

 with castor oil. It clears tissues in 95 percent. 

 hoi without shrinkage, and does not extract 

 stains. It is, therefore, one of the most valuable 

 all media for preliminary examinations. (111.01; 

 form, employed in preparing objects for mountinj 

 and sometimes as a solvent for balsam ; but it is n 

 to be recommended, as it tends to destroy tin stai 



