Casper, continues Krafft-Ebing, thoroughly diagnosed the phenomenon. Griesinger referred it to hereditary affliction. Westphal defined it as "a congenital inversion of the sexual feeling, together with a consciousness of its morbidity." Ulrichs explained it by the presence of a feminine soul in a male body, and gave the name _Urning_[30] to its subjects. Gley suggested that a female brain was combined with masculine glands of sex. Magnan hypothesised a woman's brain in a man's body. Krafft-Ebing asserts that hardly any of these Urnings are conscious of morbidity. They look upon themselves as unfortunate mainly because law and social prejudices stand in the way of their natural indulgence.[31] He also takes for proved, together with all the authorities he cites, that the abnormal sexual appetite is constitutional and inborn. Krafft-Ebing, as might have been expected, refers the phenomenon to functional degeneration, dependent upon neuropathical conditions in the patient, which are mainly derived from hereditary affliction. He confirms the account reported above from Casper as to the platonic or semi-platonic relations of the Urning with the men he likes, his abhorrence of coition, and his sexual gratification through acts of mutual embracement. The number of Urnings in the world, he says, is far greater than we can form the least conception of from present means of calculation. At this point he begins to subdivide the subjects of congenital inversion. The first class he constitutes are called by him "Psychical Hermaphrodites." Born with a predominant inclination towards persons of their own sex, they possess rudimentary feelings of a semi-sexual nature for the opposite. These people not unfrequently marry; and Krafft-Ebing supposes that many cases of frigidity in matrimony, unhappy unions, and so forth, are attributable to the peculiar diathesis of the male--or it may be, of the female--in these marriages. They are distinguished from his previous class of "acquired" inversion by the fact that the latter start with instincts for the other sex, which are gradually obliterated; whereas the psychical hermaphrodites commence life with an attraction towards their own sex, which they attempt to overcome by making demands upon their rudimentary normal instincts. Five cases are given of such persons.[32]