In the article "Generation," contained in another medical work belonging to the middle of the nineteenth century,--Rees's _Cyclopedia_,--we find the following statement: "That a mucous fluid is sometimes found in coition from the internal organs and vagina is undoubted; but this only happens in lascivious women, or such as live luxuriously." Gall had stated decisively that the sexual desires of men are stronger and more imperious than those of women. (_Fonctions du Cerveau_, 1825, vol. iii, pp. 241-271.) Raciborski declared that three-fourths of women merely endure the approaches of men. (_De la Puberté chez la Femme_, 1844, p. 486.) "When the question is carefully inquired into and without prejudice," said Lawson Tait, "it is found that women have their sexual appetites far less developed than men." (Lawson Tait, "Remote Effects of Removal of the Uterine Appendages," _Provincial Medical Journal_, May, 1891.) "The sexual instinct is very powerful in man and comparatively weak in women," he stated elsewhere (_Diseases of Women_, 1889, p. 60). Hammond stated that, leaving prostitutes out of consideration, it is doubtful if in one-tenth of the instances of intercourse they [women] experience the slightest pleasurable sensation from first to last (Hammond, _Sexual Impotence_, p. 300), and he considered (p. 281) that this condition was sometimes congenital. Lombroso and Ferrero consider that sexual sensibility, as well as all other forms of sensibility, is less pronounced in women, and they bring forward various facts and opinions which seem to them to point in the same direction. "Woman is naturally and organically frigid." At the same time they consider that, while erethism is less, sexuality is greater than in men. (Lombroso and Ferrero, _La Donna Delinquente, la Prostituta, e la Donna Normale_, 1893, pp. 54-58.) "It is an altogether false idea," Fehling declared, in his rectorial address at the University of Basel in 1891, "that a young woman has just as strong an impulse to the opposite sex as a young man.... The appearance of the sexual side in the love of a young girl is pathological." (H. Fehling, _Die Bestimmung der Frau_, 1892, p. 18.) In his _Lehrbuch der Frauenkrankheiten_ the same gynecological authority states his belief that half of all women are not sexually excitable. Krafft-Ebing was of opinion that women require less sexual satisfaction than men, being less sensual. (Krafft-Ebing, "Ueber Neurosen und Psychosen durch sexuelle Abstinenz," _Jahrbücher für Psychiatrie_, 1888, Bd. viii, ht. I and 2.)