All that we know at present of the Aryan race indicates that its social organization originated in a group which is usually called the Patriarchal Family, the members of which were all related to each other either by blood or marriage. At the head of the family was the patriarch, the eldest male descendant of its founder; its other members consisted of all the remaining males descended on the father’s side from the original ancestor, their wives, and such of the women, also descended on the father’s side from the same ancestor, as remained still unmarried. To show more exactly what people were members of the ancient patriarchal family, we will trace such a family for a couple of generations from the original founder. Suppose, then, the original founder married, and with several children, both sons and daughters. All the sons would continue members of this family. The daughters would only continue members until they married, when they would cease to be members of the family of their birth, and become members of their respective husbands’ families. So when the sons of the founder married, their wives would become members of the family; and such of their children as were sons would be members, and such as were daughters would be members only until they married; and so on through succeeding generations. On the founder’s death he would be succeeded as patriarch by his eldest son. On the eldest son’s death, he would be succeeded by _his_ eldest son, if he had a son; and if not, then by his next brother. The patriarchal family also included in its circle, in later times at all events, slaves and other people, who, although perhaps not really relations at all, were _adopted_ into the household, assumed the family name, and were looked upon for all purposes as if its actual members. This little group of individuals seems originally to have existed entirely independent of any external authority. It supported itself by its own industry, and recognized no other law or authority than its own. The one source of authority within this little state was the patriarch, who was originally regarded, not only as the owner of all the property of which the family was possessed, but also as having unlimited power over the different individuals of which it was composed. All the members lived together under the same roof, or within the same enclosure. No member could say that any single thing was his own property. Everything belonged to the family, and every member was responsible to the patriarch for his actions. [Sidenote: Custom and law.]