pupil at school He was brought to see me because he was affected with spasmodic movements. On examination, I found him to be suffering from a severe attack of gonorrhoea, which he had contracted in intercourse with his aunt's servant-maid. When I told his mother the truth, she was at first extremely angry at what she was convinced must be a mistake on my part; but further inquiry disclosed the fact that for a year or more the boy had been intimate with prostitutes and other girls. I have been writing of processes occurring in the reproductive organs, such as erections, seminal and other discharges, and masturbation; and of the means for the recognition of these processes. But it is necessary to recognise that we must not assume without further inquiry that all processes occurring in the genital organs are of a sexual nature, although in individual instances the distinction between the sexual and the non-sexual may be extremely difficult, or even impossible. Thus, of erections occurring before the reproductive glands ripen, not all are of a sexual nature. We know, too, that even in the adult, non-sexual erections may occur. The clearest instances of this are met with in the form of priapism, the principal characteristic of this condition being the occurrence of permanent erection which has nothing at all to do with the sexual impulse. The same is true for the most part of matutinal erections, the precise cause of which is not yet determined. They are commonly referred to distension of the bladder, which is supposed by reflex action to lead to distension of the corpora cavernosa of the penis. It is certain, at any rate, that these matutinal erections are not caused by sexual thoughts, nor as a rule do they induce sexual feelings. We must distinguish between these processes; just as recently we have learned to distinguish herpes progenitalis, the characteristic of which is its localisation to the genital organs, from herpes sexualis, which is directly dependent upon sexual processes. If we regard this distinction between sexual and non-sexual erections as applicable also to erections in childhood, we are justified in assuming that many erections, in infants-in-arms, for instance, are non-sexual in nature, even though in appearance there is nothing to distinguish them from sexual erections. In infants, erections may arise from external stimuli or from distension of the bladder, which must be distinguished from the erections which have a definitely sexual causation. We must, of course, admit the possibility that such primarily non-sexual erections may secondarily give rise to sexual processes; inasmuch as by the stimuli resulting from the erection, the child's attention may be directed to the genital organs. Just as we must guard against regarding every erection in the child as a sexual process, so also must we be cautious in our estimate of the significance of manual stimulations. Children often stimulate various parts of the body.