re 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.

[185] Thus Moraglia found that among 180 prostitutes in North Italian
brothels, and among 23 elegant Italian and foreign cocottes, every one
admitted that she masturbated, preferably by friction of the clitoris; 113
of them, the majority, declared that they preferred solitary or mutual
masturbation to normal coitus. Hammer states (_Zehn Lebenslaeufe Berliner
Kontrollmaedchen_ in Ostwald's series of "Grosstadt Dokumente," 1905) that
when in hospital all but three or four of sixty prostitutes masturbate,
and those who do not are laughed at by the rest.

[186] _Jahrbuch fuer Sexuelle Zwischenstufen_, Jahrgang VII, 1905, p. 148;
"Sexual Inversion," vol. ii of these _Studies_, Ch. IV. Hammer found that
of twenty-five prostitutes in a reformatory as many as twenty-three were
homosexual, or, on good grounds, suspected to be such. Hirschfeld
(_Berlins Drittes Geschlecht_, p. 65) mentions that prostitutes sometimes
accost better-class women who, from their man-like air, they take to be
homosexual; from persons of their own sex prostitutes will accept a
smaller remuneration, and sometimes refuse payment altogether.

[187] With prostitution, as with criminality, it is of course difficult to
disentangle the element of heredity from that of environment, even when we
have good grounds for believing that the factor of heredity here, as
throughout the whole of life, cannot fail to carry much weight. It is
certain, in any case, that prostitution frequently runs in families. "It
has often been my experience," writes a former prostitute (Hedwig Hard,
_Beichte einer Gefallenen_, p. 156) "that when in a family a girl enters
this path, her sister soon afterwards follows her: I have met with
innumerable cases; sometimes three sisters will all be on the register,
and I knew a case of four sisters, whose mother, a midwife, had been in
prison, and the father drank. In this case, all four sisters, who were
very beautiful, married, one at least very happily, to a rich doctor who
took her out of the brothel at sixteen and educated her."

[188] This fact is not