VETERINARY DRUGS. 599 
Marsu-Mattows ; Root of Althea officinalis—aA mucilaginous emulsion 
is made by boiling. See page 591. 
MercurtaL Ointment; Unguentum Hydrargyri.mUsed externally for 
mange and lice. 
Mercury, Ammonio-Chloride of ; White Precipitate-—Used as a local 
application to kill lice. 
Mercury, Nitrate of—Used mixed with lard, &c., to form an ointment, 
which is efficacious as a mild stimulant. 
Maenesta, Carbonate of.—A mild aperient for foals ; see Rhubarb. 
Muouriatic Acip ; Hydrochloric Acid.—In small doses, tonic, i drachm 
diluted with water. 
Mustarp; Flour of the secds of Sinapis Nigra. — Irritant applied 
externally, but not very active in the horse. 
Nirric Acip.—A tonic when largely diluted. Dose 1 drachm to 2 drachms 
Nvux Vomica.—A stimulant to the nerves, and useful in paralysis. Doss 
1 drachm. 
OuivE O1n.—Chiefly used as an ingredient in liniments. 
Opium ; Juice of the Papaver Somniferum.—Primarily stimulant. Then 
narcotic and anodyne. Dose, 1 drachm to 2 drachms. 
Potassa Fusa; Caustic Potash.—An active caustic, but not very 
manageable. 
Potassium, Iodide of—Diuretic and deobstruent, having the property of 
causing the absorption of morbid growths. Dose, 2 drachms to 4 
drachims. 
Portass, Nitrate of; Nitre ; Saltpetre.—Diuretic and febrifuge. Dose, 6 
to 8 drachms. 
Portass, Acetate of.—The same as the nitrate, but milder in its effects on 
the kidneys. 
Prussic Acip ; Hydrocyanic Acid.—Used in the form of diluted hydro- 
eyanic acid, to reduce the action of the heart. Dose, 20 to 30 
minims. 
Pyroxyitio Acip; Medicinal Naphtha.—Narcotic, having a_ special 
action on the bronchial mucous membrane. It is used in chronic 
cough. Dose, 4 ounce. 
Resty, or Rosin.—An active diuretic. Dose, 1 ounce to 2 ounces. 
RHUBARB; Root of Rheum Palmatum.—A mild purgative and stomachic, 
chiefly employed for foals, combined with magnesia. 
Sait, Common. See Chloride of Sodium. 
Savin; Tops of Juniperus Sabina.—Anthelmintic. The essential oil is 
the best form. Dose, 3 to 4 drachms. 
Strven, Nitrate of; Lunar Caustic; Lapis Infernalis.—Used externally 
in the solid form and in solution. 
Sopium, Chloride of ; Common salt.—A useful addition to the diet of 
horses. 
SPERMACETI OrntmEnT.—A very useful foundation for several external 
applications. 
SuLpHur.—An efficacious remedy in severai skin diseases. 
SunpHur Ointment, Compound.—Sulphur, $ pound; white hellebore, 
2 ounces ; nitre, 1 drachm; soft soap, } pound ; lard 14 pound: mix. 
The most useful application, when united with turpentine, in mange. 
Suuppuric Acip.—A powerful caustic, only used externally. 
Sweet Spirit or Nirre.—Diuretic, diaphoretic, antispasmodic, and 
stimulant. Dose, 1 ounce to 2 ounces. 
Tannio Acip.—Powerfully astringent. Dose, 20 to 30 grains. 
