COMMENTARY. It is also called γλυκάδιον, as the Scholiast on Nicander says, per euphemismum, from γλύκυς, sweet. But we are rather inclined to think that it is the diminutive of γλεῦκος, must, vinegar being the juice of the grape which has lost its strength. Hence Pliny calls it “vitium vini.” All the ancient authorities maintained that vinegar is at the same time refrigerant and discutient. Galen discusses the question regarding the nature of it at great length and with much ingenuity. (De Med. Simpl. i.) He, Pliny, and Celsus mention the fact that an effervescence is produced when it is poured on earth, meaning, no doubt, certain carbonates. Pliny and Celsus commend it in the strongest terms as an antidote to the sting of the asp. Serapion and the other Arabians copy Galen’s account of it. Symeon Seth gives an interesting abstract of the ancient opinions on this subject. Dioscorides and Avicenna recommend it as an application to ecchymosis of the face; but the latter remarks, if too long continued it renders the part yellow and weakens the sight. (ii, 2, 74.) See also Rhases (Cont. l. ult. i, 18.) These two Arabian authorities say of it, that it congeals the womb; but that a clyster of hot vinegar and salt proves soothing in the spreading ulcers of the intestines. Both the Greek and Arabian authorities commend it as an antidote in cases of poisoning with opium and cicuta. They also recommend an embrocation with vinegar and olive oil or rose oil to the head in affections of it. Dioscorides recommends vinegar for chronic coughs and orthopnœa, and also for defluxions of the throat and quinseys. (v, 21.) The Greek and Arabian authorities further agree in recommending it in erysipelas, herpes, and whitlow. Ὀξυάκανθος, Oxyacantha, _Evergreen Thorn_; the tree is like the wild pear in appearance and powers, having also some tenuity of parts. The fruit of it resembles myrtles. * * * * * COMMENTARY. Matthiolus, Dodonæus, and Sprengel agree in referring it to the _Mespilus Pyracantha_, or _Evergreen Thorn_. The commentators on Mesue make it to be the Berberis, i. e. the _Berberry_. See the Appendix to this section. Dioscorides, after giving a botanical description of it, says, with regard to its medicinal powers, that when pulverised and applied in a cataplasm it extracts thorns and prickles, and that its root is said to possess the power of occasioning abortions, when the abdomen is gently stroked or rubbed with it. (i, 122.) Galen says of it, that its root is attenuant and incisive, resembling that of myrtles; and that whether eaten or drunk it restrains all fluxes. (De Simpl. viii.) Although the similarity of names might lead us to suppose that this must be the _Spina acuta_ of the Arabians, this does not appear to be at all the case. Sec Avicenna (ii, 2, 11.) Ὄπιον, _Opium_, is treated of under poppy. * * * * *