is not always tantamount to the beginning of sexual intercourse, since in many cases years will intervene between marriage and the commencement of cohabitation, yet in many other instances no such interval exists. E. Ruedin[111] also deals with the question of child-marriages in India, discussing it from the point of view of racial degeneration. He states that, with one exception, modern writers are agreed that the consequences of the Indian custom of child-marriage are altogether bad--that not a single point can be urged in favour of the practice. The solitary writer to urge anything in favour of the custom of child-marriage is Sir Denzil Ibbetsson, who asserts that in the Western Punjab, where child-marriages are exceptional, immorality and assaults upon women are commoner than in the Eastern Punjab, where child-marriages are the rule. Those who strongly disapprove of child-marriages, point more particularly to the fact that when a girl-child is married to an adult man, she often receives mechanical injuries in the act of intercourse; and they contend, in addition, that child-marriage is injurious to the offspring. For, by child-marriage, we obviate any possibility of sexual selection within the limits of a particular caste, inasmuch as persons are bound together in marriage whose defective constitution and inferior mental endowments may not become apparent until long after marriage, and yet the couple, tied to one another for life, will continue to procreate an inferior stock. But, in this connexion, it must not be forgotten that in India puberty is attained far earlier in life than it is in Western Europe.