Boys also are liable to such attacks, as we learn from what happened in Breslau in the year 1889. A student of philosophy in that town enticed to his dwelling an eight-year-old boy whom he met in a public lavatory, and wounded the boy's penis with a sharp-pointed knife. It appeared that the offender had done the same thing before to other boys. Ultimately, having been examined by a committee of experts, he was on their recommendation adjudged to be insane. In the year 1869, Berlin was disturbed by the doings of a certain X. This man had made use of two boys for sexual purposes, and had inflicted on them horrible injuries: in one, he cut off the testicles, and inflicted other severe wounds, so that the boy died; in the other, he introduced a walking-stick through the anus, and pushed it roughly onwards until it had perforated the lung. Far commoner than the acts of such stabbers are the cases in which the striking of children is to the sadist a source of sex-stimulation. Erotic literature is full of the description of such perversions. Thus, in a well-known pornographic eroticon, we find pictures of a girl who has to subserve the perverse lusts of a wealthy boyar (Russian territorial magnate), the latter mishandling the child most horribly with cane and knout. In the English erotic literature, it is remarkable how often and how fully the flagellation of children is described. Almost typical are the English educational works in which, with little variation, we find descriptions of the flogging of little girls in order to excite the perverse lusts of the schoolmistresses. Not very long ago, in a certain English newspaper, a special column was devoted to accounts of the chastisement of children, and especially of girls. Anyone who reads this column with care could not fail to recognise that for the most part these chastisements were the expression of perverse sexual sensibilities. The available material shows, indeed, that in England this sexually perverse whipping of children is no mere matter of imaginative literary expression, but that such perversities are a matter of actual experience. Such things are, however, by no means confined to England, as is shown by a large number of recorded observations. In Paris, not long ago, the following case was noted. A woman entered into relations with the parents of girls of eleven and twelve years of age, in order to hire the children as the subjects of chastisement for perverse sexual purposes. The parents, who must have known for what their children were wanted, received payment. Apparently the woman did not do this for the satisfaction of any perversion of her own, but for her perverse husband or for other perverts, who watched the whippings through spy-holes. In Germany, some years ago, there was an important trial, in which I was called as an expert witness, of a man who had flogged his pupils (with one exception, they had all been boys) solely to obtain perverse sexual gratification.