perceptions attained through the different senses, and transforms them one into another. Binet[150] has established, in his excellent essays, this transposition of the senses in hysterical persons. A female patient, whose skin was perfectly insensible on one half of her body, took no notice when, unseen by herself, she was pricked with a needle. But at the moment of puncture there arose in her consciousness the image of a black (in the case of another invalid, of a bright) point. Consciousness thus transposed an impression of the nerves of the skin, which, as such, was not perceived, into an impression of the retina, of the optic nerve. In any case, it is an evidence of diseased and debilitated brain-activity, if consciousness relinquishes the advantages of the differentiated perceptions of phenomena, and carelessly confounds the reports conveyed by the particular senses. It is a retrogression to the very beginning of organic development. It is a descent from the height of human perfection to the low level of the mollusc. To raise the combination, transposition and confusion of the perceptions of sound and sight to the rank of a principle of art, to see futurity in this principle, is to designate as progress the return from the consciousness of man to that of the oyster. Moreover, it is an old clinical observation that mental decay is accompanied by colour mysticism. One of Legrain’s[151] mental invalids ‘endeavoured to recognise good and evil by the difference of colour, ascending from white to black; when he was reading, words had (according to their colour) a hidden meaning, which he understood.’ Lombroso[152] cites ‘eccentric persons’ who, ‘like Wigman, had the paper for their books specially manufactured with several colours on each page.... Filon painted each page of the books he wrote in a different colour.’ Barbey d’Aurevilly, whom the Symbolists venerate as a pioneer, used to write epistles in which each letter of a word was coloured with a different tint. Most alienists know similar cases in their experience. The more reliable Symbolists proclaim their movement as ‘a reaction against naturalism.’ Such a reaction was certainly justified and necessary; for naturalism in its beginnings, as long as it was embodied in De Goncourt and Zola, was morbid, and, in its later development in the hands of their imitators, vulgar and even criminal, as will be proved further on. Nevertheless Symbolism is not in the smallest degree qualified to conquer naturalism, because it is still more morbid than the latter, and, in art, the devil cannot be driven out by Beelzebub.