The black death, which was said to have carried off one-fourth of the population in four years, and in England carried off half the population, was a disease which puzzled the scientific men of the period. Carbuncles, tumours, spots on arms and thighs, became fatal in about three days, and the disease spread like fire among dry fuel. The effect on society was enormous. Merchants of unbounded wealth began to carry their treasures to monasteries and churches, and to lay them at the foot of the altar; but the monks in their turn shuddered at the gift, as in their view it only brought death, and they threw it over the convent walls. People were driven by despair to take up pious works as a last defence. In Avignon the Pope found it necessary to consecrate the Rhone, so that bodies might be thrown into the river as the speediest mode of burial. The morals of the people suffered by the hopeless and ghastly spectacles around, for churches were deserted by priests, and the people without shepherds gave way to covetousness as well as licentiousness. When the alarm was over, there was a notable increase of lawyers, who, like locusts, devoured the property left without owners. The plague raged from 1347 to 1350; and owing to the Pope Clement VI. appointing a jubilee in 1350, and a vast concourse of pilgrims to Rome, it was said that scarcely one in a hundred escaped alive. The Brotherhood of the Cross or of the Flagellants reappeared at this time, which betokened the end of the world to many, and, taking on themselves the sins of the people, went about scourging themselves in churches and markets, as a mode of averting the wrath of Heaven. This imposing sacrificial ceremony had been invented about a century before by Dominic, and was kept up from time to time in various countries. The panic of the black death was in some places ascribed to the infidel practices of Jews, who were accordingly hunted to death and burnt in their synagogues, or put to the sword without compunction. The physicians of the period were all at their wits' end how to administer remedies to those requiring a remedy. Among those carried off by this scourge was John Villani, the historian, and Laura, the beloved of Petrarch. Though the black death was so fatal in England, it was noted that Ireland escaped. THE DANCING MANIA AND SWEATING SICKNESS IN GERMANY AND HOLLAND.