"Take of chamomile, five drachms; boiling distilled water, a pint. Macerate for ten minutes (twenty-four hours, Edin.) in a lightly-covered vessel, and strain."

This infusion is clear, of a pale yellow colour, and has the odour and taste of the flowers. It precipitates solution of isinglass, whitish; infusion of yellow cinchona bark, white; solution of sulphate of iron and of tincture of sesquichloride of iron, black; solution of nitrate of silver, white; of bichloride of mercury, pale brown; and of acetate and diacetate of lead, yellowish white. These substances, therefore, are incompatible in prescriptions with this infusion.

Medical properties and uses. - This infusion is a good stomachic and tonic; and may be given in dyspepsia and other complaints attended with debility of the stomach, in doses of from f j. to f ij. two or three times a day. When exhibited warm it excites nausea, and is occasionally employed to assist the operation of emetics.

Infusum Krameriae. Lond. Infusion of Krameria

" Take of rhatany, an ounce; boiling distilled water, a pint. Macerate for four hours in a lightly-covered vessel, and strain."

This is a powerful astringent, either topically employed as a tooth-stick; or generally in chronic diarrhoea. The dose is from f ss. to f ij.

Infusum Lini Compositum. Lond. Dub. Compound Infusion of Linseed

"Take of linseed, bruised, six drachms; liquorice root, sliced, two drachms; boiling distilled water, a pint. Macerate for four hours near the fire, in a lightly-covered vessel, and strain."

Infusum Lini Usitatissimi, Edin. Infusion of Linseed.

"Take of linseed, an ounce; liquorice root, bruised, two drachms; boiling water, two pounds. Digest for four hours in a lightly-covered vessel, and strain."

Syn. Infusion de Semence de Lin (F.), Leinsamen aufguss(G.), Infuso di Semi di Lino (I.).

This infusion is a solution of mucus nearly in its pure state; clear, colourless, inodorous, and nearly insipid. Alcohol precipitates the mucus in white flocculi; and precipitates are also produced by diacetate and acetate of lead, and tincture of the sesquichloride of iron; thence these substances are incompatible with this infusion.

Medical properties and uses. - Infusion of linseed is a cheap and very useful demulcent, in the various cases in which this class of remedies is indicated, and during the internal exhibition of bichloride of mercury. The dose is f ij. frequently repeated.

Infusum Lupuli. Lond. Infusion of Hops

"Take of hops, six drachms; boiling distilled water, a pint. Macerate for four hours in a vessel lightly covered, and strain."

This infusion is supposed to be anodyne. It is lightly tonic, and forms a good vehicle for more powerful agents. The dose is f j. to f 3 ij.