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fcetida; mix for a long time, and exactly; then add *ij each ofdistilled water of valerian and orange-flowers, and 5 S! > of sulphuricether; mix.Poxio ex Gummi Ammoniaco et Scilla. P. Take 5J of hyssop-leaves, |iv of boiling water, infuse till the water is cold ; then take5j of oxymel of squills, gr. xij of gum ammoniac in powder; mixfor a long time in a marble mortar, then dissolve this by triturationin the former cold infusion.

Potio Purgans. P. Royal Ptisane. Take Jss each of picked senna-leaves and sulphate of soda, 5J each of anise and coriander seeds,5ss each of chervil and small burnet leaves, Oij of cold water, onecitron cut in slices; macerate for 20 hours, shaking from time totime, strain by expression, and filter through blotting-paper. SeeBlack Draught.

Potio vel Haustus Purgans Communis Decoctione Paratus. P.Take 51J each of senna-leaves and sulphate of soda, 3SS of rhubarb,5jss of manna; boil for some minutes the senna and rhubarb in q. s.of water, so that 5V may remain ; take it from the fire, add the saltand the manna, dissolve, strain by gentle expression, and add dis-tilled water of peppermint 01 orange-flowers.

Potio Scillitica Acidula, dicta Diuretica. P. Take §ss of oxy-mel of squills, %iv of distilled water of Parietaria, gj of distilledpeppermint water, ^ss alcoholized nitric acid; mix.

Poudre. The French for powder, and sometimes applied to perfumes,in the same way as we have Huile for oil, such as Poudre de rose,Poudre de violeile, &c.; most of which are for the hair, and preparedwith starch-powder as a basis, and the addition of the requisiteperfumery.

Poultices. See Cataplasmata.

Pounce. A powder made from sandarac, or resin, for dusting overpaper to make it bear ink. The mordant, made by dissolving Jj ofcarbonate of soda in a pint of water coloured with sap green, andused for preparing linen for permanent ink, is called Liquid pounce.See Ink.

Powders in Pharmacy. Sec Pulyeres, and James, Dover, Port-land, &c.

Powders, in Perfumery, are used for various purposes, such as Pearlpowders, see Paints; Almond powder, see Amvgdale Placent. ;Tooth powders, see Dentifrice.

Powders for the Hair are of various sorts; but are now seldom usedby the fashionable. It may not be improper, however, to give receiptsfor some of these, as a specimen.Common Hair Powder. To fcxiv of fine mellow cask starch, add ftvij

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