Cerebrum, _Brain_; the boiled brains of a hare when rubbed in and eaten, are useful (it is said) for forwarding dentition in infants. Some write that brain when eaten proves useful for tremblings. Dioscorides says that the brain of a cock when drunk with wine relieves those who have been bitten by venomous animals, and that it stops hemorrhages from the meninges. Galen says that the brain of a camel when dried and drunk with vinegar cures epilepsy, and that of the weasel in like manner; that the brain of a swallow with honey is of use in suffusions; while that of sheep when prepared in like manner is an excellent remedy in the dentition of children. * * * * * COMMENTARY. Galen and Serapion treat of the medicinal properties of brains in much the same terms as our author. Indeed our author copies from Galen. Avicenna says brains prove emetic after food, and are useful in the case of a person who has swallowed any poison. (ii, 2, 125.) Ἐλάια, Olea, _the Olive_; the green shoots of it are possessed of the same degree of coldness as of astringency; the fruit when perfectly ripe is moderately hot, but the unripe is more astringent and cold. The tear of Ethiopian olive resembling the slender ammoniac, is possessed of detergent powers. It is used, therefore, for cicatrices, albugo, and dimness of vision, and for the pains of the teeth when put into the carious hole. But some say that it is the wild olive that does this. Oil from fully ripe olives is sweet and moderately hot, and rather of a moistening nature. But the unripe has just as much astringency as coldness. The washed is freer from pungency. As to the old, the older it is so much the hotter and more discutient is it, more especially if it consist of subtile particles at first. This is ascertained from its being pure and transparent, and from a small quantity of it being sufficient to anoint a large part of the body, and from its being readily drunk in by the skin. Such in particular is the Sabine. That from the wild olive is at the same time detergent, astringent, and drying, as an oil. Castor oil has the same powers as old oil. The other kinds, such as that of sesame, or of radish and the like, derive peculiar properties from the substance they are formed from. * * * * *