muscular extractions. This point is, however, still obscure. But it may be regarded as definitely established that the equable voluptuous sensation, and more particularly the voluptuous acme, may occur at an age at which, at any rate, secretion does not yet exist in sufficient quantity to be expelled from the urethra, and the existence of such secretion is therefore not unequivocally manifested. In exceptional, and doubtless pathological instances, and above all in cases in which, owing to the practice of masturbation, there has been excessive stimulation, instead of the voluptuous acme, a painful sensation may be experienced. In general, however, in children, just as in adults, the voluptuous acme is associated with a sense of satisfaction, and with the subsidence of the previously existing sexual excitement. _This much is beyond question, that the voluptuous acme and the sense of satisfaction associated therewith make their appearance subsequent to the development of erection and the equable voluptuous sensation in the genital organs._ Mutatis mutandis, _this is equally true of both sexes_. In other respects, however, the voluptuous sensation and the voluptuous acme exhibit in the child an important difference from the same phenomena in the adult, to which we shall have to return later. To sum up, we may regard it as certain that erections often appear many years before the end of the second period of childhood; not infrequently, indeed, in the beginning of the second period of childhood, and even earlier. These erections may very early in life be associated with an equable voluptuous sensation, allied to the sensations of itching or tickling.[33] The voluptuous acme and ejaculation do not make their appearance until later. These statements apply, in the first place, to boys. The conditions in girls appear, however, to be analogous. But here we must be most cautious in drawing conclusions, for the reason that the sexual life of the girl is still much more obscure to us than that of the boy; this difference in our knowledge of the sexes is no less marked in the case of children than it is in respect of the adult man and woman.