The Latin _mederi_, _medicus_, _medicina_, like the corresponding term (_vi-maδay_) in the _Avesta_, go back to a root meaning wisdom--the wisdom of the ‘wise’ woman. The name ‘Medea’ belongs to the same stock and means ‘wise’ woman; and the wisdom presumably consisted originally in the knowledge of the charms (or ‘carmina contra morborum genera’) and simples, just as the ἱατρός or ἱητήρ may have got his name from ἱός and the fact that he dealt in drugs which might, according as they were used, be either the bane or the antidote. That in Greece the ἱατρὄς originally effected his cures by means of spells, soothing spells, is indicated by Pindar (_Pyth._ iii. 55), who is doubtless reproducing the popular belief when he says that Chiron loosed and rescued his patients from divers pangs, τοὺς μὲν μαλακαῖς ἑπαοιδαῖς ἁμφέπων, τοὺς δὲ προσανέα πίνοντας, ἣ γυίοις περάπτων πάντοθεν φάρμακα. In all ages ‘suggestion’ has operated for good in medical treatment; but it operates only so far as the patient believes that his healer has power and exercises that power to do him good. The medicine-man in early times exercises that power either by gestures which indicate that power is going from him, or by the words with which he banishes or overcomes the sickness. And in either case he effects his faith-healing in exactly the same way as the evil-minded possessor of magical power causes sickness and death by word and gesture, by ‘singing’ and ‘pointing’. To the mind of the believer in magic the image of a man is not merely like him but is in a mysterious way identical with him, so that blows dealt on the image are felt by the man, and the man and his image are as closely related to one another as is the exterior of a curve to the interior; and so, to the mind of the believer in magic, the relation of a man’s name to the man himself is equally intimate and close. Hence, by way of precaution, the name of a man is often kept a profound secret. The same secrecy too may be observed about the name of a god, or of a city. It would not be surprising, therefore, if the name of a man were put by the magician to the same use as his image, for the name is, if anything, even more intimately identified with the man than any likeness of him can be; and, as a matter of fact, the secrecy, which is often observed about the name of a man or a god, is observed because control of the name is assumed and believed to involve control over the person. If, therefore, the image of a man can be used for malevolent purposes by a magician, so too may his name. The savage’s objection to being photographed, as is well known, is due to the feeling that with his likeness he himself passes into the power of the possessor. I need hardly point out that pictorial signs and writing and runes are regarded, at first, by those who do not understand them, as mysterious and magical, as σήματα λυγρά. The written name of a person is as