furious, loyal and natural in a moment?" At the same time Lady Macbeth affects to swoon away in the presence of so awful a crime. For the time all suspicion of guilt, except in the mind of Banquo, is averted from the real murderers. But, like so many criminals, Macbeth finds it impossible to rest on his first success in crime. His sensibility grows dulled; he "forgets the taste of fear"; the murder of Banquo and his son is diabolically planned, and that is soon followed by the outrageous slaughter of the wife and children of Macduff. Ferri, the Italian writer on crime, describes the psychical condition favourable to the commission of murder as an absence of both moral repugnance to the crime itself and the fear of the consequences following it. In the murder of Duncan, it is the first of these two states of mind to which Macbeth and his wife have only partially attained. The moral repugnance stronger in the man has not been wholly lost by the woman. But as soon as the crime is successfully accomplished, this repugnance begins to wear off until the King and Queen are able calmly and deliberately to contemplate those further crimes necessary to their peace of mind. But now Macbeth, at first the more compunctious of the two, has become the more ruthless; the germ of crime, developed by suggestion, has spread through his whole being; he has begun to acquire that indifference to human suffering with which Richard III. and Iago were gifted from the first. In both Macbeth and Lady Macbeth the germ of crime was latent; they wanted only favourable circumstances to convert them into one of those criminal couples who are the more dangerous for the fact that the temptation to crime has come to each spontaneously and grown and been fostered by mutual understanding, an elective affinity for evil. Such couples are frequent in the history of crime. Eyraud and Bompard, Mr. and Mrs. Manning, Burke and Hare, the Peltzer brothers, Barre and Lebiez, are instances of those collaborations in crime which find their counterpart in history, literature, drama and business. Antoninus and Aurelius, Ferdinand and Isabella, the De Goncourt brothers, Besant and Rice, Gilbert and Sullivan, Swan and Edgar leap to the memory. (3) "Le Crime a Deux," by Scipio Sighele (translated from the Italian), Lyons, 1893.