Ointments.--In the Middle Ages ointments made of the most far-fetched materials were employed even by distinguished surgeons. That, indeed, is the one serious flaw in the surgery of the thirteenth and fourteenth centuries, when they did everything else so well. These ointments contained all manner of materials that were likely to impress patients and make them feel that something wonderful was being done for them. Crushed insects of all kinds were employed for external lesions. Here the doctrine of similars seems once more to have been in play. Insects gave creepy feelings, and whenever such feelings, or the paresthesiae generally, were complained of, a poultice or ointment made of insects seemed to be the natural remedy. The more repellent the materials, the more efficient they were likely to be. Many of the paresthesiae are due to neurotic conditions and it is not surprising that when an ointment of crushed lice--these insects being collected from barnyard {35} fowls or from hogs--was used, the suggestive influence was strong. Another important ingredient in ointments were portions of dead bodies. A bit of a mummy from the East was supposed to be particularly efficacious. Portions of the bodies of men who had been hanged, or of the moss that grew on the skulls of malefactors whose bodies had been long exposed in chains to the air, were also favorite ingredients. Plants and shrubs gathered in graveyards, especially in the dark of the moon, because on account of the terror of the place they were then harder to get, also had a great reputation. CHAPTER IV SIGNATURES AND PSYCHOTHERAPY