Precocious puberty in a boy of one year

Judging by the small number of published cases, precocious puberty is a rare condition. As the disease is an interesting one, it is probable that most of the cases have been recorded. It seems to be found three or four times more frequently in girls than in boys; Kepler (Mayo Clinic) was able to collect from the literature only 37 cases in children, and of these 12 were in boys. Broster, in what is probably the most exhaustive survey of the subject, mentions only one case in a boy, so perhaps I may be excused if I give the details of what was to me a very interesting case of virilism—pubertas præcox, or precocious puberty—in a baby of twelve months.