Note 101 — Chapter I · —INTRODUCTION. (continued 2)

Sir Richard Burton, who helped to popularize this view, regarded the phenomenon as "geographical and climatic, not racial," and held that within what he called the Sotadic Zone "the vice is popular and endemic, held at the worst to be a mere peccadillo, while the races to the north and south of the limits here defined practice it only sporadically, amid the opprobrium of their fellows, who, as a rule, are physically incapable of performing the operation, and look upon it with the liveliest disgust." He adds: "The only physical cause for the practice which suggests itself to me, and that must be owned to be purely conjectural, is that within the Sotadic Zone there is a blending of the masculine and feminine temperaments, a crasis which elsewhere only occurs sporadically" (Arabian Nights, 1885, vol. x, pp. 205-254). The theory of the Sotadic Zone fails to account for the custom among the Normans, Celts, Scythians, Bulgars, and Tartars, and, moreover, in various of these regions different views have prevailed at different periods. Burton was wholly unacquainted with the psychological investigations into sexual inversion which had, indeed, scarcely begun in his day.