the organ, by tickling it, or in some other way. Finally, there are cases in which all kinds of other actions are performed. To the more complex perversions I shall return. Here I shall only point out that children may sometimes be utilised for the wildest orgies. A case was formerly published by Tardieu, in which servant-maids in conjunction with their lovers carried out with the children under their care all sorts of perverse acts: cunnilinctus, masturbation, the introduction of various objects into the vagina and the anus. Finally, it may be pointed out that in the lack of an object, the paedophile will naturally satisfy himself with the aid of imaginative ideas, masturbating the while, or he may be content with purely psychical onanism. We must not forget that the imagination usually suggests stimuli far stronger than those furnished by objective experience, and this applies in a most marked degree to paedophilia. Many paedophiles also satisfy themselves with the aid of erotic and obscene literature, containing descriptions of the acts in which they are interested, or with pictures of such acts. Among obscene pictures and photographs, not a few depict sexual acts performed with children; and there is no doubt that these are sometimes pictures taken from the life, children having actually been photographed in such obscene attitudes. The Latin countries appear to be the principal source of such pictures and photographs. It will readily be understood that the performance upon children of sexual acts is a very serious matter for the children themselves, especially as affecting their sexual morality. It is true that in many instances paedophilia does not entail any consequences for the child, which completely fails to understand that it has been made use of for perverse purposes. The offender may know how to mask his actions, so that even a third person who is looking on may detect nothing more than tender caresses, and may remain altogether unaware of the existence of any sexual excitement. But in other cases the consequences for the children may be extremely grave. Not only is the child in this way prematurely introduced to sexual practices, but its moral corruption may result. The danger to the child is greater in view of the fact that the child depraver often fails to realise that he is trespassing against the child's rights. I remember a gentleman who had been punished with imprisonment on account of improper relations with a boy, and who continued to assure me that he had done nothing wrong in touching the boy's penis. In other cases, well-educated young men and women have no idea that unchaste conduct with children is an offence which may entail severe punishment, even in cases in which the child's genital organs are not touched.