Mezerei Cortex. Mezereon Bark. The dried bark of Daphne Me-zereum, D. Laureola, or D. Gnidium. In long thin, more or less flattened strips, or quills of various lengths, flexible, very tough and fibrous; outer surface brown, inner white and silky; no marked odour but an acrid burning taste.

Misturæ (See Ammoniacum, Amygdala, Creosotum, Creta, Fer-Rum, Guaiacum, Oleum Ricini, Senna, Vinum Gallicum)

Dose. 1/2 - l fl. oz.; save that the last three have a dose of 1 - 2 fl. oz.

Morphina (see Opium p. 79).

Moschus. Musk. Dose, 5 - 10 gr.; 3 - 6 dgms. The dried secretions from the preputial follicles of Moschus moschiferus.

Mucilagines (see Acacia, Tragacanth).

Myristica. Nutmeg. The dried seeds of Myristica fragrans. Oval or rounded seeds rarely exceeding an inch in length; odour strong and agreeably aromatic; taste aromatic, warm and slightly bitter.

Oleum Myristicæ. Dose 1/2 - 3 min.; 0.03 - 0.2 c.c. A colourless or pale yellow oil having the taste of nutmeg. Soluble 1 in 4 1/2 of alcohol, in all proportions in absolute alcohol.

Spiritus Myristicæ. Dose, 5 - 20 min.; 0.3 - 1.2 c.c. - 10; Alcohol, to 100.

Myrrha. Myrrh. A gum resin obtained from the stem of Bal-samodendron Myrrha. Rounded or irregular tears or masses of tears, reddish externally, dry and brittle and more or less covered with a fine powder: odour aromatic, taste aromatic, acrid and bitter: contains 40-60% of gum soluble in water; remainder is largely resin and is soluble in alcohol.

1Pilula Aloes et Myrrhæ (see Aloe p. 32).

1Tinctura Myrrhæ. Dose, 30 - 60 min.; 2 - 4 c.c. - 20; Alcohol, 100: by maceration.

Naphthol Beta-naphthol. Dose, 3 - 10 grs.; 2 - 6 dgms. Betamonohydroxynaphthalene, C10H7OH. White or nearly white crystalline laminae or in powder; taste sharp and pungent; odour resembling phenol. Soluble 1 in 1,000 of water, 1 in less than 2 of alcohol.