Concerning the wide prevalence of sexual inversion and of homosexual phenomena generally, there can be no manner of doubt. This question has been most fully investigated in Germany. In Berlin, Moll states that he has himself seen between 600 and 700 homosexual persons and heard of some 250 to 350 others. Hirschfeld states that he has known over 10,000 homosexual persons. There are, I am informed, several large cafés in Berlin which are almost exclusively patronized by inverts who come here to flirt and make acquaintances; as these cafés are frequented by male street prostitutes (Pupenjunge) the invert risks being blackmailed or robbed if he goes home or to a hotel with a café acquaintance. There are also a considerable number of homosexual _Kneipen_, small and unpretentious bar-rooms, which are really male brothels, the inmates being sexually normal working men and boys, out of employment or in quest of a few marks as pocket money; these places are regarded by inverts as very safe, as the proprietors insist on good order and allow no extortion, while the police, though of course aware of their existence, never interfere. Homosexual cafés for women are also found in Berlin. There is some reason for believing that homosexuality is especially prominent in Germany and among Germans. I have elsewhere referred to the highly emotional and sentimental traits which have frequently marked German friendships. Germany is the only country in which there is a definite and well-supported movement for the defense and social rehabilitation of inverts. The study of sexual inversion began in Germany, and the scientific and literary publications dealing with homosexuality issued from the German press probably surpass in quantity and importance those issued from all other countries put together. The homosexual tendencies of Germans outside Germany have been noted in various countries. Among my English cases I have found that a strain of German blood occurs much more frequently than we are entitled to expect; Parisian prostitutes are said to be aware of the homosexual tastes of Germans; it is significant that (as a German invert familiar with Turkey informed Näcke), at Constantinople, the procurers, who naturally supply girls as well as youths, regard Germans and Austrians as more tending to homosexuality than the foreigners from any other land. Germans usually deny, however, that there is any special German proclivity to inversion, and it would not appear that such statistics as are available (though all such statistics cannot be regarded as more than approximations) show any pronounced predominance of inversion among Germans. It is to Hirschfeld that we owe the chief attempt to gain some notion of the percentage of homosexual persons among the general population.[104] It may be said to vary in different regions and more especially in different occupations, from 1 to 10 per cent. But the average when the individuals belonging to a