96     Thus the Princess Maria Porphyroghnita restored her brother, the Emperor Alexius, who suffered from faintings, by sprinkling him with rose water in the presence of his aunt Eudoxia (Hist. byz. Alexias, lib. xv, p. 503, ed. Posser); and Horstius (Oper., iii, p.59) saw great benefit from rose vinegar in cases of syncope.