"It depends primarily upon an increase of the psychological process of representation," Colin Scott remarks of sexual symbolism generally, "involving greater powers of comparison and analysis as compared with the lower animals. The outer impressions come to be clearly distinguished as such, but at the same time are often treated as symbols of inner experiences, and a meaning read into them which they would not otherwise possess. Symbolism or fetichism is, indeed, just the capacity to see meaning, to emphasize something for the sake of other things which do not appear. In brain terms it indicates an activity of the higher centers, a sort of side-tracking or long-circuiting of the primitive energy; ... Rosetti's poem, 'The Woodspurge,' gives a concrete example of the formation of such a symbol. Here the otherwise insignificant presentation of the three-cupped woodspurge, representing originally a mere side-current of the stream of consciousness, becomes the intellectual symbol or fetich of the whole psychosis forever after. It seems, indeed, as if the stronger the emotion the more likely will become the formation of an overlying symbolism, which serves to focus and stand in the place of something greater than itself; nowhere at least is symbolism a more characteristic feature than as an expression of the sexual instinct. The passion of sex, with its immense hereditary background, in early man became centered often upon the most trivial and unimportant features.... This symbolism, now become fetichistic, or symbolic in a bad sense, is at least an exercise of the increasing representative power of man, upon which so much of his advancement has depended, while it also served to express and help to purify his most perennial emotion." (Colin Scott, "Sex and Art," _American Journal of Psychology_, vol. vii, No. 2, p. 189.) In the study of "Love and Pain" in a previous volume, the analysis of the large and complex mass of sexual phenomena which are associated with pain, gradually resolved them to a considerable extent into a special case of erotic symbolism; pain or restraint, whether inflicted on or by the loved person, becomes, by a psychic process that is usually unconscious, the symbol of the sexual mechanism, and hence arouses the same emotions as that mechanism normally arouses. We may now attempt to deal more broadly and comprehensively with the normal and abnormal aspects of erotic symbolism in some of their most typical and least mixed forms.