“A long and intense passion on one object,” observes an old navy surgeon[15], “whether of pride, love, anger, fear, or envy, we see have brought on some universal tremors; on others, convulsions, madness, melancholy, consumption, hecticks, or such a chronical disorder, as has wasted their flesh or their strength, as certainly as the taking in of any poisonous drugs would have done. Any thing frightful, sudden, and surprising, upon soft, timorous natures, not only shews itself in the countenance, but produces sometimes very troublesome consequences; for instance, a parliamentary fright will make even grown men sh-t themselves, scare them out of their wits, turn the hair grey. Surprise removes the hooping-cough; looking from precipices, or seeing wheels turn swiftly, gives giddiness, &c. Shall then these little accidents or the passions, (from caprice or humour perhaps,) produce those effects, and not be able to do any thing by amulets? No, as the spirits in many cases resort in plenty, we find where the fancy determines, giving joy and gladness to the heart, strength and fleetness to the limbs, lust a flagrancy to the eyes, palpitation, and priapism; so amulets, under strong imagination, is carried with more force to a distempered part; and, under these circumstances, its natural powers exert better to a discussion. “The cures compassed in this manner are not more admirable than many of the distempers themselves. Who can apprehend by what impenetrable method the bite of a mad dog[16] or tarantula should produce their symptoms? The touch of a torpedo, numbness? or a woman impress the marks of her longings and her frights on her fœtus? If they are allowed to do these, doubtless they may the other; and not by miracles, which Spinoza denies the possibility of, but by natural and regular causes, though inscrutable to us. “The best way, therefore, in using amulets, must be in squaring them to the imagination of patients: let the newness and the surprise exceed the invention, and keep up the humour by a long roll of cures and vouchers: by these and such means many distempers, especially of _women, that are ill all over, or know not what they ail_, have been cured, I am apt to think, more by a fancy to the physician than his prescription; which hangs on the file like an amulet. Quacks again, according to their boldness and way of addressing (velvet and infallibility particularly) command success by striking the fancies of an audience. If a few, more sensible than the rest, see the doctor’s miscarriages, and are not easily gulled at first sight, yet when they see a man is never ashamed, in time jump in to his assistance.”