The Siphnian Diphilus, as quoted by Athenæus, states that walnuts occasion headach, and swim on the stomach; but such as are tender and white contain better juices, and are more wholesome; and that such as have been toasted in a furnace afford little nourishment. (Deipnos. ii.) It appears, from Macrobius, whose account of them is very interesting, that they were eaten at the dessert. He states decidedly that the royal nut of the Greeks was the juglans or walnut. (Sat. iii, 18.) Simeon Seth says that, when taken before other food, they are apt to prove laxative or emetic. Averrhoes says the like of them. He adds that filberts are not so apt to produce this effect. According to Rhases, they are apt to prove injurious to the stomach and liver. The Siphnian Diphilus says that almonds are attenuant, diuretic, purgative, and afford little nourishment; that the green contain bad juices, and are possessed of stronger medicinal properties; but that the dried are more flatulent, and apter to swim on the stomach. He adds that such as are tender, full, and are whitened, contain milky juices which are more wholesome. Simeon Seth says that bitter almonds are hotter, more attenuant, and more incisive than the ripe. He adds that filberts are the most nutritious of the nuts but difficult to digest. The pistachio nut has been long very celebrated in the East and in Sicily. See Celsus (Hierobotanicon), and Brydone (Tour through Sicily.) Galen says that it possesses a certain degree of bitterness and astringency, and that it proves useful in obstructions of the liver, but that it affords little nourishment. He adds that it is neither beneficial nor injurious to the stomach. Simeon Seth remarks that the moderns looked upon pistacs as stomachic. Averrhoes speaks highly of them. Rhases says they are of a hotter nature than almonds. Avicenna also says of them that they are of a heating nature. Theophrastus describes the pistachio tree as a species of turpentine, and it is now acknowledged as such. Galen states that the best damascenes are such as are large, spongy, and astringent. He adds that taken with sweet wine they tend to open the bowels. Oribasius says that they afford little nourishment, but may be useful for moistening and cooling the stomach. Martial calls them laxative. It appears certain from Isidorus, that the coccymela and myxæ were the same as the pruna or plums. The principal variety is the _prunus insiticia_, or bullace plum. Galen says of jujubes, that they suit best with the intemperaments of women and children; but that they give little nourishment. Haly Abbas states that they are cold and humid, of slow digestion, and apt to form phlegm. They are the _serica_ of Galen, who, however, also applies the other term (_zizypha_) to them. (De Alim. ii, 38.)