boy aged 13-3/4 years, with an abundance of pubic hair, numerous well-developed spermatozoa were present. Haberda is of opinion that, speaking generally, the first formation of the spermatozoa is associated with the appearance of the other indications of puberty. The earliest authenticated age at which spermotozoa have been known to appear is 13-1/2 years; they have been found at this age by two separate investigators, one in Paris, the other in Berlin. Notwithstanding the fact that, as we have seen, such extensive variations occur, we are justified in making the general statement that in the case of children in our own country no spermatozoa are developed; if exceptions ever occur, they can relate only to the last year or year and a half of the second period of childhood. We must now proceed to ask whether it is possible for ejaculation to occur in children at a time of life when the formation of spermatozoa in the testicles has not yet begun; this question must be answered with an unconditional affirmative. We have seen that the secretions of several other glands intermingle with the secretion of the testicles. These glands are the following: the prostate gland, the glands of the vesiculae seminales and the vasa deferentia, the glands of Cowper, and the glands of Littre. It is certain that these glands begin to secrete at different times, and, above all, that some of them begin to secrete before spermatozoa have appeared in the testicles. Hence it is rightly believed that the capacity for coitus (_potentia coeundi_) develops much earlier than the capacity for procreation (_potentia generandi_)--a fact which was well known to Zacchias.[29] _Quae enim hanc juventutem vel praecedunt aetates, vel sequuntur aut plane semen non effundunt aut certe infoecundum aut male foecundum effundunt._ Strassmann[30] considers that in our climate the capacity for procreation begins at the earliest at the end of the fifteenth year, and the capacity for coitus at the end of the thirteenth year. In a number of cases in which in children I found stains on the underclothing, or in some other way obtained specimens of the ejaculated fluid, the results of the examination for spermatozoa were entirely negative. In a case which came under my notice a long time ago, that of a child seven years of age, I had assumed that the fluid with which the underclothing was stained was produced by inflammatory irritation of the urethra consequent upon masturbation. Subsequent experience, however, in conjunction with the observations of other investigators, has led me to the firm conviction that even in our climate we do not need to invoke the idea of such inflammatory irritation of the urethra in order to account for the ejaculation of fluid by children--at any rate when these are approaching the end of the second period of childhood. In the case of twelve-year-old boys, I believe that such ejaculations of fluid occur in quite a large number of cases.