Page:Vitruvius the Ten Books on Architecture.djvu/197

Rh 4. This kind of colonnade is called among the Greeks because athletes during the winter season exercise in covered running tracks. Next to this "xystus" and to the double



should be laid out the uncovered walks which the Greeks term and our people "xysta," into which, in fair weather during the winter, the athletes come out from the "xys­tus" for exercise. The "xysta" ought to be so constructed that there may be plantations between the two colonnades, or groves