Bark, or, as it is commonly called, Peruvian bark, is an
antispasmodic, tonic, astringent, and stomachic.
_Used externally_, it is an excellent detergent for foul ulcers, and
those that heal slowly.
_Used internally_, it is particularly valuable in intermittent fever
or ague, malignant measles, dysentery, diarrhoea, intermittent
rheumatism, St. Vitus's dance, indigestion, nervous affections,
malignant sore throat, and erysipelas; its use being indicated in all
cases of debility.
_Doses of its preparations_.--_Powder_, from five grains to two
drachms, mixed in wine, water, milk, syrup, or solution of liquorice;
_infusion_, from one to three ounces; _decoction_, from one to three
ounces; _tincture_ and _compound tincture_, each from one to three
drachms.
_Caution_.--If it causes oppression at the stomach, combine it with an
aromatic; if it causes vomiting, give it in wine or soda water; if it
purges, give opium; and if it constipates give rhubarb.