es such stimuli. But a separation of the sexes will
not do away with them, as is proved, not only by the homosexual
manifestations of the undifferentiated sexual impulse, but also by those
that arise transiently, at any rate, when the members of one sex are
completely segregated from those of the other--as in boarding-schools,
on board ship, and in prisons. The educator cannot even count on being
at all times able to safeguard the child from the sight of sexual acts.
In the country, but also in the town, children have opportunities for
this; not only when the members of a large family sleep in a single
room, and the children can watch their parents and others in the act of
sexual intercourse; but in various other ways. The mere kissing of
affianced lovers must in this sense be regarded as a sexual act, and how
is it possible so to bring up a child that it will never have an
opportunity of seeing anything of the kind? If we go further, and
recognise that through the association of ideas such a sexual stimulus
may arise from witnessing the coupling of animals--of dogs, for
instance, in the street--we shall understand how the educator's powers
are limited by the milieu in which he has to work. _We have, therefore,
to recognise clearly from the first, that in the education of the child
the complete exclusion of sexual stimuli is impossible._

Obviously, when the external noxious influences exceed a certain
measure, we may endeavour to effect an improvement by measures of
general hygiene, through the activities of the central government, the
municipality, or the community at large. In this connexion, we think of
better housing conditions, of the separation of children from
night-lodgers, and the like measures. But, even here, we must guard
against making Utopian demands, after the manner of many fanatics on the
subject of social hygiene, whose proposals are often quite incompatible
with the maintenance of human intercourse. Independently of such
impracticable demands for future reforms, the educationalist of to-day
seeks to protect the child from unduly frequent sexual excitement. But
sometimes the result is other than he expects. Sport is recommended to
divert the mind from sexual ideas, and yet I have known cases in which
marked sexual excitement has been induced in this way. I am not now
referring to mechanical stimulation through bicycling or
horseback-riding, of which I shall speak later; but many a child has
been sexua