Mr. Draper attempts to show that Shakespeare was influenced to such an extent by the medical psychology of his time that he harnessed his dramatic talent to fit the pseudoscientific system of ethics and cosmogony which it embraced. This sought to ascribe undesirable sociological phenomena both to individual imperfections and to strange or accidental happenings of nature. Portentous deeds and dread-foreboding acts were the preordained results of an imbalance in the universe, either in the essential forces of nature, or in the physical properties of the individual. Mental disease was produced by an elemental distribution of the four humors. The behavior of Lady Macbeth is to be understood as potentially predetermined by a pathological accumulation