The periods of childhood and school-life are soon past, and then there begins a period of life which is, indeed, fraught with dangers for your son and your daughter. It is the period of transition in which the life-course of your child is definitely settled, its character firmly fixed, and its vocation decided. It is the period which decides the weal or woe of your child’s whole future, both temporal and eternal. During this period the battle between Christ and Satan, between