1. The general problem. Birth control and regulation of births are expressions which are sometimes used synonymously, and sometimes to designate morally acceptable or unacceptable means of regulating the number of births. Regulation of births can mean promotion of births (which may mean artificial insemination), though it is usually used to restrict the number of births. Birth control can be attained by abstinence from sexual intercourse, abortion, or by the use of contraceptives. Limitation of bir…