A new idea of the practice of physic; written by that famous Franciscus De Le Boe, Sylvius; late chief professor of physic in the University of Leiden. The first book; of the diseases either constituting, producing, or following the natural functions of man not in health. Wherein is containd, beside a new method in general, a vindication of the spleen and mother from fits attributed to them. As also a new discovery of intermitting fevers, the yellow jaundice, and other diseases, never before discoverd. All cleard by anatomical experiments, and chymical demonstrations; as also by their cures. Whereto is prefixed a preface written by Dr. Mar. Nedham. Translated faithfully by Richard Gower, formerly student under the author.