"'The rolling exercise consisted in being cast down in a violent manner, doubled with the head and feet together, or stretched in a prostrate, manner, turning swiftly over like a dog. Nothing in nature could better represent the jerks, than for one to goad another alternately on every side with a piece of red-hot iron. The exercise commonly began in the head, which would fly backwards and forwards, and from side to side, with a quick jolt, which the person would naturally labour to suppress, but in vain. He must necessarily go on as he was stimulated, whether with a violent dash on the ground, and bounce from place to place, like a foot-ball; or hopping round with head, limbs, and trunk, twitching and jolting in every direction, as if they must inevitably fly asunder,' &c." The following sketch is from _Dow's Journal_. "In the year 1805 he preached at Knoxville, Tennessee, before the governor, when some hundred and fifty persons, among whom were a number of Quakers, had the jerks." "I have seen all denominations of religions exercised by the jerks, gentleman and lady, black and white, young and old, without exception. I passed a meeting-house, where I observed the undergrowth had been cut away for camp meetings, and from fifty to a hundred saplings were left, breast high, on purpose for the people who were jerked to hold by. I observed where they had held on, they had kicked up the earth, as a horse stamping flies." Every one has heard of the extraordinary scenes which took place in the Cevennes at the close of the seventeenth century.