Conjurers are impostors; and there are no days unlucky but those we make so by our vanity, folly, and sin. 4. Popular superstitions have greatly injured the cause of medicine. That superstition which leads people to believe in the efficacy of charms is very injurious. We will enumerate a few cases by way of example. The scrofula, for instance, is frequently called the _king's evil_. It received this name because it was generally believed that the touch of a king would cure the disorder. For centuries this belief was so prevalent, that any one who should call it in question would have been considered no less than an infidel, and an enemy to his king and country. And so great was the demand for the king's touch, from invalids, that one day in seven was set apart for the king to bestow healing mercies on his subjects. Vast numbers flocked to him, from Wales, Ireland, Scotland, and many parts of the continent. An exact register was kept of the number of persons who came to Charles the Second for relief, from 1660 to 1664, and they amounted to twenty-three thousand six hundred and one. From May, 1667, to 1684, the number of persons touched amounted to sixty-eight thousand five hundred and six. Total, ninety-two thousand one hundred and seven. The practice was begun in the year 1051, and continued until the reign of the present royal family, who were possessed of too much sense to encourage such an idle superstition. But notwithstanding this belief and practice were abandoned by the royal family, yet, with some individuals, a belief still prevails that certain persons are endowed with healing power. In 1807, a farmer in Devonshire, England, who was the ninth son of a ninth son, officiated in the cure of the king's evil, and multitudes believed that they received healing from his touch. In this country, a _seventh_ son of a seventh son has officiated in similar cases, and performed incredible cures, as we are told by those who think they have received signal blessings through his instrumentality.