importance of an organic necessity, and really endanger the freedom of the will. The want of satisfaction of this impulsive desire may, under such conditions, induce a condition allied to actual rutting, or a psychical condition, accompanied by emotions of fear, in which the individual gives up to the impulse, and responsibility becomes doubtful. If the individual does not give up to his powerful impulse, he is in danger, by reason of his enforced abstinence, of ruining his nervous system by inducing a neurasthenia, or seriously increasing such a condition if it be already present. In normally constituted individuals, too, the sexual instinct is an inconstant quantity. Aside from the temporary indifference following satisfaction, and the diminution of sexual desire in long-continued continence after a certain reactionary stage of sexual desire is overcome, the manner of life has a great influence. Those living in large cities, who are constantly reminded of sexual things and incited to sexual enjoyment, certainly have more sexual desire than those living in the country. A dissipated, luxurious, sedentary manner of life, preponderance of animal food, and the consumption of spirits, spices, etc., have a stimulating influence on the sexual life. In woman the sexual inclination is post-menstrually increased. At this time, in neuropathic women, the excitement may reach a pathological degree.
The great libido of consumptives is remarkable. Hofmann tells of a consumptive peasant who satisfied his wife sexually on the evening before his death.
The sexual acts are coitus (eventually rape) and, faute de mieux, masturbation; and, with defective moral sense, pederasty or bestiality. If sexual power is diminished or extinct, with excessive sexual desire, all manner of perversity of sexual acts becomes possible.
Excessive libido may be peripherally or centrally induced. The former manner of origin is the more infrequent. Pruritus and eczema of the genitals may cause it; and likewise certain substances, like cantharides, which powerfully stimulate sexual desire. Not infrequently, in women at the climacteric, sexual
