The first purpose of perfume is certainly to hide natural body odors. Paradoxically, the popular perfumes of all nations contain elements with odors similar to sweat, urine or fæcal odors. Psychoanalysis can easily explain this paradox: perfumes express the conflict surrounding body odors. They simultaneously hide and stress (in a distorted form) these odors. Details of the ways in which perfumes are used show the great olfactory-excretory erotic interest in their use. Pratt's remarks about the magic of incorporation of odors (breathing) are especially interesting (Cf. Fenichel, Otto: ber respiratorische Introjektion. Int. Ztschr. f. Psa., XXVII, 1931).