It remains to note what there is in Galen’s works in the way of divination and astrology. We are not entirely surprised that contemporary doctors confused his medical prognostic with divination, when we read what he has to say concerning the outward signs of hot or cold internal organs. In the treatise, entitled _The Healing Art_ (τέχνη ἰατρική),[825] which Mewaldt says was the most studied of Galen’s works and spread in a vast number of medieval Latin manuscript translations,[826] he devotes a number of chapters to such subjects as signs of a hot and dry heart, signs of a hot liver, and signs of a cold lung. Among the signs of a cold brain are excessive excrements from the head, stiff straight red hair, a late birth, mal-nutrition, susceptibility to injury from cold causes and to catarrh, and somnolence.[827] [Sidenote: Marvelous statements repeated by Maimonides.] In his commentary on the _Aphorisms_ of Hippocrates Galen adds other signs by which it may be foretold whether the child will be a boy or girl to those signs already mentioned by Hippocrates.[828] Some of these seem superstitious enough to us. And it was a case of the evil that men do living after them, for Moses Maimonides, the noted Jewish physician of Cordova in the twelfth century, in his collection of _Aphorisms_, drawn chiefly from the works of Galen, repeats the following method of prognostication: _Puerum cum primo spermatizat perscrutare, quem si invenis habere testiculum dextrum maiorem sinistro_, you will know that his first child will be a male, otherwise female. The same may be determined in the case of a girl by a comparison of the size of her breasts. Maimonides also repeats, from Galen’s work to Caesar on theriac,[829] the story of the ugly man who secured a beautiful son by having a beautiful boy painted on the wall and making his wife keep her eyes fixed upon it. Maimonides also repeats from Galen[830] the story of the bear’s licking its unformed cubs into shape.[831] [Sidenote: Dreams.]