MARISCOUS 



728 



MAS, MASC 



Mariscous [mar-is' '-kits) \rnarisca, hemorrhoid]. Per- 

 taining to hemorrhoids. 



Marito-nucleus [mar-it-o-nu' '-kle-us) \_maritus, married ; 

 nucleus, a little nut]. The nucleus of the ovum after 

 •its union with the male pronucleus. 



Marjolin's Warty Ulcer. An ulcer resulting from the 

 breaking down of warty cicatricial tissue. It is of slow 

 progress, and finally gives rise to glandular enlarge- 

 ment. See Diseases, Table of. 



Marjoram [mar'-jo-rani). See Origanum. 



Mark [ME., mark, a mark]. Birth-mark, or mother's 

 mark ; nevus. M., Portwine. See Nevus. 



Marl [ME., marl, marl]. A clay rich in calcium car- 

 bonate. 



Marmalade, Marmelade [mar' -mal-ad) [Port., mar- 

 mello, a quince]. A conserve prepared from the 

 quince, orange, plum, peach, or other fruit, which is 

 sliced and preserved in a saturated syrup. 



Marine's Reagent. See Tests, Table of. 



Marmorate [mar'-mo-ral) \jnarmor, marble]. In bi- 

 ology, traversed with vein-like markings like those of 

 certain kinds of marble. 



Maroon [mar-oon'). See Pigments, Conspectus of. M.- 

 oxid. Same as Purple-brown. 



Marriageable [mar'-dj-a-bl) [ME., mariage, mar- 

 riage ; maritus, a husband]. Of an age when mar- 

 riage may be legally performed. 



Marriot, Dry Vomit of. An emetic preparation con- 

 sisting of equal parts of sulphate of copper and tartar 

 emetic. 



Marrow [mar'-o) [ME., marow, marrow]. A sub- 

 stance composed of water, fat, and albuminous matter, 

 existing in the cavities of many of the long bones. 

 M.-cell, a cell resembling a white blood-corpuscle, 

 but larger and with a clearer protoplasm and a larger 

 nucleus, and showing ameboid movement. It is found 

 in the marrow of bones. M., Fetal, the juicy, red 

 marrow filling the cavities of the fetal endochondral 

 bones. M., Red, the reddish marrow, quite free 

 from fat, contained near the articular extremities of 

 long bones. M., Spinal, the spinal cord. M., Yel- 

 low, the fatty marrow of the shafts of long bones. 



Marrubiin [mar-u' -be-in) \_marrubium, horehound]. 

 The crystalline, neutral, bitter substance found in 

 Horehound. 



Marrubium [mar-u' '-be-um) [L.]. Horehound. The 

 leaves and tops of M. vulgare. They contain a bitter 

 principle and a volatile oil. In small doses horehound 

 is a mild stomachic tonic ; in larger doses a laxative. 

 It exerts a soothing effect in catarrh of the nasal pas- 

 sages, and is therefore an ingredient of various cough- 

 mixtures. Dose ^ss-j. Unof. 



Mars [mart] [L. , the war-god]. An old synonym for 

 iron. SeePerrum. M. -brown. See Pigments , Con- 

 spectus of. M.-red. Same as Ocher. M. -violet. 

 Same as Mineral-purple. 



Marsala [mahr-sa' -lali) [Ital.]. An Italian wine con- 

 taining 20 per cent, of alcohol. 



Marsden's Mucilage or Paste. A caustic paste con- 

 sisting of one part of white arsenic to two of gum- 

 arabic. 



Marsdenia [marz-de' -ne-ah) Rafter William Marsden, 

 a British orientalist]. A genus of asclepiadaceous 

 plants of which several species yield indigo. M. con- 

 durango. See Condurango. M. erecta, a poisonous 

 species from Europe and Asia Minor. Taken inter- 

 nally it produces violent convulsions and death, and 

 applied externally it blisters the skin. 



Marsdenin [marz-dcn' -in) [after William Marsden, a 

 British orientalist]. A bitter crystalline extractive from 

 Marsdenia erecta. 



Marsh [ME., tnersh, a marsh]. A swamp or bog. M.- 



fever. See Malaria. M.-gas, Methyl Hydrid, Fire 

 damp, Methane ; a hydrocarbon having the compositioi 

 CH 4 . It occurs in swamps as a product of the decora 

 position of vegetable tissue. It constitutes a large pro 

 portion of common illuminating-gas. M. -miasm 

 See Malaria. M. Rosemary, the root of Stati 

 caroliniana, a bitter astringent, resembling kino ir 

 therapeutic properties. It is a popular New En 

 remedy for cancrum oris and for aphthous affecLi< 

 the mouth. Dose of the fid. ext. 3 ss-j. M. Trefoil 

 See Menyanthes trifoliata. M. -mallow. SeeAllhaa. 

 M. -marigold. See Caltha. Unof. 



Marsh's Test. See Tests, Table of. 



Marshall's Cerate. A cerate composed of calome 

 5J, lead acetate 3 ss, palm oil 3 V J> ointment of! 

 nitrate of mercury 5jij. M., Vein of. See 

 M.'s Vestigial Fold, a crescentic fold of 

 membrane of the pericardium containing the remain: 

 of the left superior vena cava. 



Marson's Theory. A theory that claims that the 

 degree and duration of vaccinal protection are propor 

 tionate to the perfection of the vaccine lesions and tc 

 the number of insertions made. 



Marsupial [mar-su'-pe-al) [/zapervTroc, a pouch]. 

 Pouched. In zoology, a mammal of the order Alarm 

 pialia. See Marsupium and Mastoiheca. M. Incisure 

 [Incisura marsupialis), the deep posterior notch be- 

 tween the two halves of the cerebellum, occupied by 

 the falx cerebri. 



Marsupiate [mar-su'-pe-at). See Marsupial 



Marsupium [mar-sit' -pe-um) [papcvrroc, a pouch, bag]. 

 In biology, the fold of abdominal integument, 01 

 "pouch," that serves to support and protect the young 

 of those mammals belonging to the sub- class M 

 ria or Didelphia ; a Mastotheca, a. v. 



Marteno [mar'-te-nd). Incorrect form of A/artynia 



Martial [tnar'-skal) [martialis , cf. mars, iron]. Perm : 

 ginous or chalybeate ; containing iron. 



Martin's Bandages. Long India-rubber bandages, frotr. 

 5 to 21 feet in length, used in the treatment of < •';■ 

 ulcers, varicose veins, and joint-disease. M.'s Depil- 

 atory, a preparation made by passing H 2 S throi 

 mixture of slaked lime two parts and water 

 parts. M.'s Hemostatic, surgeon's agaric saturate) 

 with ferric chlorid. M.'s Operation. See Ope 

 ations, Table of. 



Martindale's Mixture. See Anesthetic. 



Martineau's Formula. A formula used in the treat- j 

 ment of syphilis, constituted as follows: Bichlorid <<t 

 mercury zy^ drams, peptone % ounce, chlori 

 ammonium ]/ z ounce. Fifteen grains of this pn 

 tion contain nearly four grains of sublimate. 1 

 diluted with water alone or with a mixture of 

 and glycerin, and was injected in doses of fron 

 a grain upward. It is not much used now. M. s 

 Treatment. See Treatment, Methods of. 



Martius's Yellow. See Pigments, Conspectus of. 



Martynia [mar-tin' '-e-ah) [after John Martyn, ai 

 American botanist]. A genus of dicotyledonou- gamo 

 petalous plants. M. proboscidea, unicorn phi 

 employed as a mucilaginous drink in bladder-troubk 



Maruta [ma-ru'-tah) [L.]. A genus of compotil 

 flowered herbs. M. cotula, mayweed, or dog-fetn 

 is an ill-scented weed common in Europe and N" : 

 America. It is antipyretic and insecticide, is a vesica 

 of some power, and is said to be a good application 

 to bruises and swellings. Unof. 



Mas, Masc [mas, mask) [L. abbrev. of ma- 

 male, or masculinus, masculine]. 1. In biol 

 ployed to designate a male plant or animal 

 symbol is usually rf- In old usage it was frequenl 

 employed in a fanciful way as the specific nam 



