But the most dangerous climacteric year was the 63d, for this was made up of 7 × 9. It was, therefore, an _annus hebdomaticus_ and, at the same time, also an _annus enneaticus_, for it belonged both to the class of those climacteric years which were formed by the multiplier 7, as also to that which were obtained by the multiplier 9. It was most natural, therefore, that a period of life which from two sides was fraught with danger, like the unfortunate 63d year of life, was bound to appear equally suspicious to the healthy and to the sick. It is probable that this year was, therefore, called _androdas_, because, as Rantzau believes, it debilitates and breaks vitality. It would appear, moreover, that the climacteric years enjoyed general consideration in ancient times as well as in the middle ages, for Rantzau names a number of celebrated men who were said to have expressed themselves regarding the significance of these years, such as Plato, Censorinus, Gellius, Philo Judæus, Macrobius, Cicero, Boëtius, St. Ambrose, St. Augustine, Bede, Georgius Valla, and others. Not satisfied with this statement, Rantzau also mentions in his catalog a multitude of prominent men who all departed this life in their 63d year, and thus, as he believes, had established the dangerousness of this year by their death. It is probable, therefore, that the 63d birthday was celebrated with great apprehension during the entire middle ages, and the respective individual did not draw an easy breath until after the ominous year had been successfully passed. However, the stars knew not only how to tell particulars regarding the probable course and possible complications of diseases, but they also gave information regarding very special forms of affections. It was possible, thus, to learn from them at what time diseases of the eye were to be feared, when mental diseases were threatening, when hemorrhages were to be expected, etc. The astrologically trained physician was able to obtain prompt information from the stars regarding contingent surgical accidents; for there existed various conjunctions of the celestial bodies, according to Ptolemy, which surely pointed to wounds, fractures of bones, burns, concussions, and other lesions. In fact, it was possible to see in advance, from the celestial phenomena, what limbs would be exposed to forcible injury; thus, certain conjunctions of the planets were said to prognosticate with certainty wounds of the head; others, of the face; others, again, of the hands and feet, of the fingers and toes, of the arms and legs, of the trunk and neck. Astrology, moreover, was not satisfied with the prognostic and diagnostic activity which we have just mentioned, but it also interfered in therapy, internal as well as external.