thumb|A black eunuch of the Ottoman Sultan. Photograph by Pascal Sebah, 1870s. Coptic castration of slaves was discussed by Peter Charles Remondino, in his book History of Circumcision from the Earliest Times to the Present, published in 1900. He refers to the "Abou-Gerghè" monastery in a place he calls "Mount Ghebel-Eter". He adds details not mentioned by Andrews such as the insertion of bamboo into the victim. Bamboo was used with Chinese eunuchs. Andrews states his information is derived from an earlier work, Les Femmes, les eunuques, et les guerriers du Soudan, published by a French explorer, Count Raoul du Bisson, in 1868, though this detail does not appear in Du Bisson's book.
thumb|A black eunuch of the Ottoman Sultan. Photograph by Pascal Sebah, 1870s. Coptic castration of slaves was discussed by Peter Charles Remondino, in his book History of Circumcision from the Earliest Times to the Present, published in 1900. He refers to the "Abou-Gerghè" monastery in a place he calls "Mount Ghebel-Eter". He adds details not mentioned by Andrews such as the insertion of bamboo into the victim Bamboo was used with Chinese eunuchs. Andrews states his information is derived. from an earlier work, Les Femmes, les eunuques, et les guerriers du Soudan, published by a French explorer, Count Raoul du Bisson, in 1868, though this detail does not appear in Du Bisson's book.