Scarcely had the panic of the black death subsided when a delusion arose in Germany, a demoniacal epidemic, called the dance of St. John or St. Vitus, which seized upon people, convulsing body and soul, and leading them to perform a wild dance, screaming and foaming with fury. Assemblages of these fanatics became prominent in 1374, and continued more or less to exhibit the same fascination for about two centuries. They first broke out at Aix-la-Chapelle among crowds who were said to come from Germany, who formed circles hand in hand, whirling about for hours together in wild delirium, shrieking, and insensible to the wonder, horror, and jeers of the bystanders. After the fit they fell down and groaned, as if in the agonies of death, when their companions swathed them in cloths tightly drawn round the wrists, and then thumped or trampled on the parts affected. Some after this frenzy pretended to see the heavens open, and the Saviour and the Virgin Mary enthroned and beckoning to them. The clergy were gradually led to believe that these people were possessed of devils which required to be exorcised. The people affected were mostly of the class of poor, and little removed from vagabondism. Another visitation of a kindred nature was the sweating sickness, which was a violent inflammatory fever, that after a short rigor prostrated the powers as with a blow, and amid painful oppression of the stomach, headache, and lethargic stupor suffused the body with a fetid perspiration. In England it prevailed in 1485, and some chroniclers estimated that scarcely one in a hundred escaped when once seized; and it was said to be locally confined to England, and did not extend either to Scotland or Ireland or Calais. The disease was said to be traced to a season of heavy torrents of rain and inundations of rivers. THE MONK FLAGELLANTS.