Infusion of Pois′on-oak. Syn. Infusum rhois toxicodendri, L. Prep. From the dried leaves of the poison-oak (Rhus toxicodendron), 3 dr.; boiling water, 1 pint. Stimulant and narcotic; chiefly in palsy and mania.

Infusion of Pop′py-heads. Syn. Poppy tea; Infusum papaveris, L. From poppy-heads (capsules of Papaver somniferum). Soothing, anodyne. Sweetened with honey, it is a popular remedy for tickling cough, restlessness, &c.; also used hot, as an embrocation, in painful tumours, inflammations, &c. See Infusion of Red Poppy.

Infusion of Pur′ging Flax. Syn. Infusum lini cathartici, L. From the dried leaves of purging flax (Linum catharticum). Cathartic. The dose should be repeated at intervals of an hour or an hour and a half, until it operates.

Infusion of Quas′sia. Syn. Quassia tea; Infusum quassiæ (B. P., Ph. L. E. & D.), L. Prep. 1. (B. P.) Quassia, in chips, 60 gr.; cold distilled water, 10 oz.; infuse for half an hour, and strain.—Dose, 1 to 2 oz.

2. (Ph. L.) Quassia (sliced), 40 gr.; boiling distilled water, 1 pint; infuse for 2 hours in a covered vessel, and strain.

3. (Ph. E.) Quassia, 1 dr.; boiling water, 1 pint.

4. (Ph. D.) Quassia (rasped), 1 dr.; boiling water, 812 fl. oz.

5. (Ph. U. S.) Quassia, 2 dr.; cold water, 16 fl. oz.; macerate for 12 hours, and strain. As a bitter tonic, in loss of appetite, dyspepsia, &c.; either combined with alkaline carbonates or chalybeates. Sweetened with moist sugar or honey, it forms a common FLY-WATER or FLY-POISON.

6. (Compound; Infusum quassiæ compositum, L.—Ellis.) Quassia, serpentary, and dried orange peel, of each 14 oz.; boiling water, 1 pint. A stimulant stomachic.

Infusion of Red Cab′bage. Syn. Infusion of blue cabbage. Used as a colour, and to make test-paper. It will not keep without the addition of about 1-10th of its weight of rectified spirit.