Against the gout, the same Alexander of Tralles recommended a verse from Homer, or, better still, to engrave on a leaf of gold the words _mei_, _dreu_, _mor_, _phor_, _teus_, _za_, _zown_. He conjured, by the words _Iao_, _Sabaoth_, _Adonai_, _Eloi_, a plant he employed in the same disease. In quotidian fever he advised an amulet made of an olive leaf on which was written in ink, _Ka Poi. A._[58] In the thirteenth century, Hugo de Lucques said a _Pater noster_ and other prayers to the Trinity to cure fractures of the limbs. But in the following century astrology replaced the magic of religious superstition. Arnauld de Villeneuve attributed to each hour of the day a particular virtue which influenced, according to the influence of the horoscope, the different parts of the body. According to Arnauld, we can use bleeding only on certain days when such and such a constellation is in place, and no other time; but the position of the moon more particularly needed attention. The most favorable time for phlebotomy was when Luna was found in the sign of Cancer; but the conjunction of the latter with Saturn is injurious to the effects of medicines, and especially of purgatives.[59] His contemporary, Bernard de Gordon (of Montpellier), gives as a sure method of hastening difficult accouchments the reading of passages from the Psalms of David. He explains the humors of certain hours of the day in the following manner: the blood in the morning moves towards the sun, with which it is in harmony; but it falls towards evening, because the greatest amount of sanguification occurs during sleep. In the third hour of the day the bile runs downwards, to the end that it may not make the blood acid;[60] the black bile moves at the ninth hour and the mucus towards evening. The efficacy of precious stones for bewitching, and many other superstitious ideas, were likewise noted by medical authors, notably Italian writers, as, for instance, Michel Savonarola, Professor at Ferrara, one of the most celebrated physicians of his age. In Germany, Agrippa of Nettesheim, philosopher, alchemist and physician, had a predilection for magic and the occult sciences, if we are to judge from his works published in 1530 and 1531, _i.e._, _De incertitudianæ et vanitate scientiarum_, _De occulta philosophia_, in which he mentions action induced at a distance and forsees the discovery of magnetism. Like him, his contemporaries, Raymond Lulle, in Spain, and J. Reuchlin, published books on the Cabala (_Kabbala_), and, in Italy, Porta founded, at Naples, the _Academy of Secrets_, for the development of occult sciences, which are explained in his treatise _De Magia Naturali_.