The Water was likewise diversly tempered by the different situation of three great Vessels of Brass, whose Water went from one into another, and there were Pipes that conveyed these three sorts of Water into the _Bath_. The _Academies_ of the Ancients, which they called _Palaestra_, was a place where the Youth learned Letters and their Exercises. They were composed of three parts, _viz._ Of a _Peristyle_, a _Xyste_, and a _Stadium_; the _Peristyle_ was a Court surrounded with _Portico's_, which were of two sorts; three of them were Simple, and one Double. The Simple stood in a row against three Bodies of Lodgings, composed of many great Halls, where the Philosophers had their Disputes and Conferences. The Bodies of the Lodgings, which was the length of the double _Portico_, and one part of the Bodies of Lodgings which turned in, were distributed into several parts, for the Studies and Exercises of Youth; for there they had their _Classes_, their _Baths_, their _Stoves_, and their _Tenis-Court_. The _Xyste_ was a place planted with Trees, and surrounded with _Portico's_ on every side: These _Portico's_ were of two sorts. There was one double which was set against the Bodies of the Lodgings, to which the double _Portico_ of the _Peristyle_ was joyned. The _Simple Portico's_ had two Wings, under these _Simple Portico's_ there were hollow Ways, where they performed their Exercises; the rest of the _Portico_ was raised to the right and the left, for those that had a mind to Walk while the rest performed their Exercises, in the hollow ways. The Place which was compassed with these three _Portico's_, was planted with Trees, which made Allies, where the Wrestlers exercised in Winter, when it was fair Weather. The _Stadium_ was on the Side of the _Peristyle_ and the _Xyste_. It was an Alley of 90 Perches; on each Side it had many Steps or Degrees, which made a sort of a long _Theater_ bending in at both ends; these Steps or Degrees were made for the convenience of seeing them that Run. CHAP. II. _Of Private Buildings._ ARTICLE I. _Of the Courts of Houses._ [Sidenote: _Lib. 6. Chap. 3._] The Houses of the Ancients had five sorts of Courts, of which the greatest part were covered round about by the Jettings which supported the Water-Channel or Gutter, in which all the Water that fell from the Roof met together. These Courts made with Jettings, were of four sorts; The first was called the _Tuscan_, this Court was surrounded with a Jetting _en auvent_, which was laid upon four Beams, supported by other standing Beams placed in the Corners. The second Sort was called _Corinthian_; it had likewise Beams, but they were further from the Walls than in the _Tuscan_ Court, and they were laid upon Pillars. The third Sort was called _Tetrastyle_, because the Beams were supported with four Pillars which were in the place of the standing Beams that were made use of in the _Tuscan Court_.