M. Durden recommends collodion as a covering tor pills; others, a solution of gutta pereha in chloroform; but the ready solubility of these materials in the stomach may be questioned. M. Blanchard uses balsam of Tolu dissolved in ether. Mr. Baildon recommends chloroform instead of ether.

Plasma. Schacht. See Glycerinum Amyli, B. P.

Plunket's Ointment fob Cancer. See Causticum Anti-cancrosum, Pocket Formulary.

Pomade Divine. Beef marrow 3 lbs.; put it into an earthern vessel, and cover it with cold water, and change the water daily for a few days, using rose-water the last day. Pour off and press out the water; add to the marrow 4 oz. each of styrax, benzoin, and Chio turpentine,

1 oz. orris powder, 1/2 oz. each of powdered cinnamon, cloves, and nutmeg. Set the vessel in hot water, and keep the water boiling for 3 hours; then strain. For Pomades for the Hair, see Hair Cosmetics, after Per-fumery.

Portland's (Duke of) Gout Powder. Equal quantities of the roots of gentian and birthwort, tops of germander, ground pine, and lesser centaury: all to be powdered and mixed together.

Powell's Balsam for Cough. Mix together 2 drs. of syrup of Tolu, 1 oz. of paregoric elixir, and 2 oz. of liquorice-juice.

Queen of Hungary's Water. Tops and flowers of rosemary 2 lbs., rectified spirit 3 lbs.; digest in a close vessel for 50 hours in a gentle heat, then distil by water-bath.

Quinine and Camphor Pills. See Pilula QuiniAe et Cam-phorAe, Pocket Formulary.

Radcliffe's Elixir. Aloes 6 drs., ciunamon, zedoary, and cochineal, each 1/2 dr., rhubarb 1 dr., syrup of buckthorn

2 oz., proof spirit 16 fluid oz., water 5 fluid oz. - Dr. Paris. According to Gray, it contains jalap, scammony, and senna.

Raspail's Camphor Cigarettes. These are merely camphor enclosed in a tube (a quill or paper tube may be used), confined by blotting paper, and used cold. Another kind of camphorated cigars is made by saturating dried coltsfoot or other leaves with a strong solution of camphor, and rolling them in the form of cigars.

Reece's Chirayta Pills. Extract of chirayta 2 drs., dried carbonate of soda 1 scruple, p. ginger 15 grs. Mix, and divide into 36 pills. Two twice a day.

Regnauld's Pectoral Paste. Pectoral flowers (mullein, coltsfoot, catsfoot, and red poppies mixed) 16 oz., boiling water 3 lbs.; infuse, strain, and add to the clear liquor 6 lbs. of clean gum Arabic; dissolve by a gentle heat, and evaporate to a proper consistence, adding towards the end, 6 drs. of tincture of balsam of Tolu.

Reynold's Gout Specific. It is supposed to be a wine of colchieum.

Revalenta. It is said to be prepared from the seeds of the Ervum lens. See Dietetic Articles.

Riga Balsam for Beuises. Mix 4 oz. of spirits of wine with 1 dr. of compound tincture of benzoin, and 2 drs. of tincture of saffron.

Rigollot's Mustard Leaves. An admirable and cleanly substitute for mustard poultices. They appear to consist of flour of mustard attached to paper by some glutinous material. See Charta Sinapis, B. P.

Robinson's (Dr.) Stimulating Purgative Pills. Watery extract of aloes 1 dr., balsam of Peru 10 grs., oil of caraway 10 drops, scammony 1/2 dr. Mix, and divide into 20 pills: 2 or 3 when required.

Roche's Embrocation. Olive oil, with half its weight of oil of cloves and oil of amber. - Dr. Paris.

Rogers Magnesian Purgative. - Calcined magnesia 1 oz., carbonate of magnesia 1/2 oz., citric acid 3 1/4 oz., sugar, rubbed with a few drops of essence of lemon, 6 1/4 oz. To form Aerated Magnesian Lemonade, put 1/4 of the powder into a soda-water bottle nearly filled with water, and cork it securely.

Rousseau's Drops. See Vinum Opii Fermentatione Para-tum, Pocket Formulary.

Ruspini's Styptic. It contains (according to Dr. A. T. Thomson) gallic acid, sulphate of zinc, spirit, and rose-water.

Ryan's Essence of Coltsfoot. Tincture of balsam of Tolu 2 oz., compound tincture of benzoin 2 oz., spirit of wine 4oz.-Gray.

Rymer's Tincture. A tincture of capsicum, camphor, cardamom, rhubarb, aloes, and castor, in proof spirit, with a small quantity of sulphuric acid. - Dr. Paris. (The inventor states that it is impregnated with an aerial acid.)

Salts, Mineral. See Waters, Factitious Mineral, further on.

Scott's Pills. See Anderson's Pills.

Scott's Plaster. This appears to be a carefully prepared Emp. Plumbi, spread on calico. If it contain resin, the quantity is probably less than in Emp. ResinAe.

Seidlitz Powders (in separate powders). One contains 2 drs. of powdered Rochelle salts, and 40 grs. of bicarbonate of soda; the other powder is p. tartaric acid 35 grs.

Seidlitz Powder, in one bottle. Note. - The powders are all to be thoroughly dried separately, at a gentle heat - the potassio-tartrate of soda (Soda tartarata) at a temperature not exceeding 110° F.; the others not higher than 120°. Take of potassio-tartrate of soda, dried, 15 oz., tartaric acid, dried, 5 oz. (or citric acid 4 3/4 oz.), dry bicarbonate of soda 6 oz. Mix, and keep in a well-closed bottle. Dose, 3 drs. Or, mix two parts of bitartrate of soda with one part of bicarbonate of soda. Keep dry. The above have no resemblance to the natural water of Seidlitz. See Waters (Mineral), page 198.

Sinapine Tissue. A substitute for mustard poultices. Sheets of paper impregnated with essence of mustard and tincture of capsicum.

Singleton's Golden Ointment. Orpiment mixed with lard to the consistence of an ointment.

" There appears to be some mistake in this statement, as that sold us under this name had nearly the same composition as the ointment of nitric oxide of mercury of the Pharmacopoeia. It did not contain a trace either of arsenic or sulphur." - Cooley.

Soda Powders. These usually contain in one paper 30 grs. of bicarbonate of soda, and in the other 25 grs. of tartaric acid (or 24 of citric acid). For sherbet, lemonade, and ginger-beer powders, see Beverages, in another division of this work.