Obstinate and incredulous men, as he tells us, accounted for these cures in three ways:  by the journey and change of air the patients obtained in coming to London; by the influence of imagination; and the wearing of gold.

To these objections he answers, 1st.  That many of those cured were inhabitants of the city. 2d.  That the subjects of treatment were frequently infants. 3d.  That sometimes silver was given, and sometimes nothing, yet the patients were cured.

A superstition resembling this probably exists at the present time in some ignorant districts of England and this country.  A writer in a Medical Journal in the year 1807, speaks of a farmer in Devonshire, who, being a ninth son of a ninth son, is thought endowed with healing powers like those of ancient royalty, and who is accustomed one day in every week to strike for the evil.

I remember that one of my schoolmates told me, when a boy, of a seventh son of a seventh son, somewhere in Essex County, who touched for the scrofula, and who used to hang a silver fourpence halfpenny about the neck of those who came to him, which fourpence halfpenny it was solemnly affirmed became of a remarkably black color after having been some time worn, and that his own brother had been subjected to this extraordinary treatment; but I must add that my schoolmate drew a bow of remarkable length, strength, and toughness for his tender years.

One of the most curious examples of the fallacy of popular belief and the uncertainty of asserted facts in medical experience is to be found in the history of the Unguentum Armarium, or weapon ointment.

Fabricius Hildanus, whose name is familiar to every surgical scholar, and Lord Bacon, who frequently dipped a little into medicine, are my principal authorities for the few circumstances I shall mention regarding it.  The Weapon Ointment was a preparation used for the healing of wounds, but instead of its being applied to them, the injured part was washed and bandaged, and the weapon with which the wound was inflicted was carefully anointed with the unguent.  Empirics, ignorant barbers, and men of that sort, are said to have especially employed it.  Still there were not wanting some among the more respectable members of the medical profession who supported its claims.  The composition of this ointment was complicated, in the different formulae given by different authorities; but some substances addressed to the imagination, rather than the wound or weapon, entered into all.  Such were portions of mummy, of human blood, and of moss from the skull of a thief hung in chains.