[178] Raciborski, _Traité de l'Impuissance_, p. 20. It may be added that Bergh, a leading authority on the anatomical peculiarities of the external female sexual organs, who believe that strong development of the external genital organs accompanies libidinous tendencies, has not found such development to be common among prostitutes. [179] Hammer, who has had much opportunity of studying the psychology of prostitutes, remarks that he has seen no reason to suspect sexual coldness (_Monatsschrift für Harnkrankheiten und Sexuelle Hygiene_, 1906, Heft 2, p. 85), although, as he has elsewhere stated, he is of opinion that indolence, rather than excess of sensuality, is the chief cause of prostitution. [180] See "The Sexual Impulse in Women," in the third volume of these _Studies_. [181] Tait stated that in Edinburgh many married women living with their husbands in comfortable circumstances, and having children, were found to be acting as prostitutes, that is, in the regular habit of making assignations with strangers (W. Tait, _Magdalenism in Edinburgh_, 1842, p. 16). [182] Janke brings together opinions to this effect, _Die Willkürliche Hervorbringen des Geschlechts_, p. 275. "If we compare a prostitute of thirty-five with her respectable sister," Acton remarked (_Prostitution_, 1870, p. 39), "we seldom find that the constitutional ravages often thought to be necessary consequences of prostitution exceed those attributable to the cares of a family and the heart-wearing struggles of virtuous labor." [183] Hirschfeld states (_Wesen der Liebe_, p. 35) that the desire for intercourse with a sympathetic person is heightened, and not decreased, by a professional act of coitus. [184] This has been clearly shown by Hans Ostwald (from whom I take the above-quoted observation of a prostitute), one of the best authorities on prostitute life and character; see, e.g., his article, "Die erotischen Beziehungen zwischen Dirne und Zuhälter," _Sexual-Probleme_, June, 1908. In the subsequent number of the same periodical (July, 1908, p. 393) Dr. Max Marcuse supports Ostwald's experiences, and says that the letters of prostitutes and their bullies are love-letters exactly like those of respectable people of the same class, and with the same elements of love and jealousy; these relationships, he remarks, often prove very enduring. The prostitute author of the _Tagebuch einer Verlorenen_ (p. 147) also has some remarks on the prostitute's relations to her bully, stating that it is simply the natural relationship of a girl to her lover.