COMMENTARY. It is probably the lignum aloes or _Aloexylon Agallochum_, Lour., although there has been considerable difference of opinion on this point. See Gerarde’s ‘Herbal’ and the commentators on Dioscorides and Mesue. Our author’s description of it is taken from Dioscorides (i, 21.) The Arabian authorities and Simeon Seth describe several varieties of it; the most excellent of which is said to be the Indian. At all times it has been much used in India as a perfume. See in particular Avicenna, who gives an elaborate dissertation on the different kinds of agallochum or xylaloe, found in India, and the modes of preparing it (ii, 2, 733.) See also Serapion (De Simpl. 197); Ebn Baithar (ii, 224); and Rhases (Cont. l. ult. i, 27.) It does not occur in the Hippocratic treatises, nor in the works of Celsus. Although not retained in our Dispensatory, it is still kept in the shops of the apothecaries, and has the reputation of being cordial and alexiterial. See Gray (Suppl. to Pharmacop. p. 91.) Ἀγαρικὸν, Agaricum, _Agaric_, is a root or an excrescence from the trunk of a tree, of a porous consistence, and composed of aerial and terrene particles. It is of a discutient nature, cuts thick humours, and clears away obstructions, of the viscera particularly. * * * * * COMMENTARY. It appears to have been the same as the _Boletus igniarius_ (_touchwood_ or _spunk_), which is still retained in our modern Dispensatories. It is a fungous excrescence which grows on the trunk of the oak, larch, cherry, and plum. Dioscorides and most of the ancient authorities speak highly of it as a styptic. Dioscorides also commends it in stomach complaints, but Aëtius maintains that it is prejudicial to the stomach. Galen calls it cathartic, and speaks highly of its virtues in the cure of jaundice and other hepatic affections. (De Simpl. v.) For the Arabians, see Avicenna (ii, 2); Serapion (De Simpl. 78); Rhases (Contin. l. ult. i, 28.) They recommend it in jaundice, like Galen, and in complaints of the lungs, melancholy, protracted fevers, and in other cases. It is now seldom used, being found to act harshly both as an emetic and a cathartic. We have treated of the poisonous agarici in another place (v, 64.) The _Boletus Laricis_ occurs in the modern Greek Pharmacopœia. (Athens, 1837.) Ἀγήρατον, Ageratum, _Maudlin_, is possessed of discutient and slightly anti-inflammatory powers. * * * * *