279. Uua: i.e. grapes of the vine; they are hot and wet, unless their nature be changed by land or country; Ysaac says that they generate pure blood, and that they surpass all other fruits, except the fruit of the fig; Ysaac says that they are distinguished into four substances, the bone, cold and dry; the juice, hot and wet; the kernel, hot and dry, and the skin, cold and dry also; Galen says that the operation of the skin of raisins is the same as that of the skin of grapes, because they are indigestible and windy; Ysaac says that grapes stop the drunkenness of wine, and that every drunkenness that comes suddenly lasts but briefly, and every drunkenness that comes slowly lasts for a long time, as we have said.