Angelo Zuccarelli, "Asessualizzazione o sterilizzazione dei Degenerati," L'Anomalo, 1898-99, No. 6; id., "Sur la nécessité et sur les Moyens d'empêcher la Réproduction des Hommes les plus Dégénérés," International Congress Criminal Anthropology, Amsterdam, 1901.
Näcke, Neurologisches Centralblatt, March 1, 1909. The original account of these operations is reproduced in the Psychiatrisch-Neurologische Wochenschrift, No. 2, 1909, with an approving comment by the editor, Dr. Bresler. As regards castration in America, see Flood, "Castration of Idiot Children," American Journal Psychology, Jan., 1899; also, Alienist and Neurologist, Aug., 1909, p. 348.
It is probable that castration may prove especially advantageous in the case of the feeble-minded. "In Somersetshire," says Tredgold ("The Feeble-Mind as a Social Danger," Eugenics Review, July, 1909), "I found that out of a total number of 167 feeble-minded women, nearly two-fifths (61) had given birth to children, for the most part illegitimate. Moreover, it is not uncommon, but, rather the rule, for these poor girls to be admitted into the workhouse maternity wards again and again, and the average number of offspring to each one of them is probably three or four, although even six is not uncommon." In his work on Mental Deficiency (pp. 288-292) the same author shows that propagation by the mentally deficient is, in England, "both a terrible and extensive evil."
This example is brought forward by Ledermann, "Skin Diseases and Marriage," in Senator and Kaminer, Health and Disease in Relation to Marriage.