216. Ordium: i.e. barley; cold and dry in the second degree; in Platearius' book, it is highly recommended for use in medicine, because tisane of barley is made from it; it serves well for people with fever, as Hippocrates says in the book, Regimen acutorum morborum, and also in the first book of his Aphorisms. It serves against apostumes generally, whether hot or cold, i.e. barley meal and vinegar to repercuss the hot apostumes at the early stage, and barley meal and yolk of egg to mature them when they have developed. Barley meal, pitchand honey to mature the cold apostumes. Galen says that of all grains the barley is the grain which most nourishes accidentally, while wheat is the grain that most nourishes naturally. Ysaac says to boil barley, pound it in a mortar, and make a potage of it in goat's milk, and that potage is a food that is suitable for people with phthisis or hectic fever, because it renews the natural wetness; it increases the sperm and the urine and the spirits, as Ysaac says in the book De Dietis Universalibus.