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proper (insistence. It is a good basis for gargles in sore throat, andfor allaying tickling coughs; but it is injured in efficacy by the longboiling that is ordered, the active portion being partly driven off. Itis better to mix the honey with the vinegar diluted in distilled water,by putting them in a vessel set in boiling water.

Oxymurias Hydrargyri. See Hydrargyri Oxymurias.

Oxymuriates are chemical preparations formed with alkalies, metals,<&c, and chlorine or oxymuriatic acid. They are more properlytermed chlorates.

Oxymuriate of Lime, or Chlorate of Lime, is a deliquescent salt, ofa sharp bitter taste, soluble in alcohol. It gives out oxygen whenheated.

Oxymuriate of Potass, or Chlorate of Potass, is prepared by passingchlorine through a solution of potass in Woolf's apparatus, and allow-ing crystals to form. It is used in chemical experiments, and formaking chemical matches.

Oxymuriate of Soda, or Chlorate of Soda, is prepared in the sameway, and lias very similar properties.

Oxymuriatic Acid. See Chlorine.

Oyster. Ostrea edit/is. P. Like other shell fish the oyster is nutritiveand non-stimulant, and a good food for convalescents. The greencolour of oysters (erroneously supposed to arise from the shellscoming from copper-banks) arises from the growth of marine con-fervas, or crowsilk, which is not poisonous. The shells arc used toprepare an absorbent powder. See Test.e.

P.sony. Pceonia officinalis. A native plant of rare occurrence, said tobe antispasmodic. Oribasius recommended a necklace of the root asa specific in epilepsy ; but he always accompanied it with copiousevacuations.

Paints, in perfumery and for the toilette, are chiefly various sorts ofred and white, the reds being in general termed Rouge, and thewhites, Pearl powder, &c. For each of these I shall select a fewreceipts.Rouse. The vegetable substances which furnish rouge are red sandal-wood, alkanet root, cochineal, Brazil-wood, and especially the bastardsaffron, which yields a very beautiful colour when mixed with a cer-tain quantity of talc. Some perfumers compose vegetable rouges withvinegar. These reds are liable to injure the beauty of the skin. Itis more advisable to mix them with oily or unctuous matters, and to

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