620 IV. THE NINETEENTH CENTURY underlying unity. The younger has sprung from the union of the rude customs of a group of Low German tribes with rules worked out by the subtle, acute and eminently dis- putatious intellect of the Gallicized Norsemen who came to England in the eleventh century. It has been much affected by the elder system, yet it has retained its distinctive features and spirit, a spirit specially contrasted with that of the imperial law in everything that pertains to the rights of the individual and the means of asserting them. And it has communicated something of this spirit to the more ad- vanced forms of the Roman law in constitutional counti^ies. At this moment the law whose foundations were laid m the Roman Forum commands a wider area of the earth's surface, and determines the relations of a larger mass of mankind. But that which looks back to Westminster Hall sees its subjects increase more rapidly, through the growth of the United States and the British Colonies, and has a prospect of ultimately overspreading India also. Neither is likely to overpower or absorb the other. But it is possible that they may draw nearer, and that out of them there may be developed, in the course of ages, a system of rules of private law which shall be practically identical as regards contracts and property and civil wrongs, possibly as regards offences also. Already the commercial law of all civilized countries is in substance the same everywhere, that is to Bay, it guarantees rights and provides remedies which afford equivalent securities to men in their dealings with one an- other and bring them to the same goal by slightly different paths. The more any department of law lies within the domain of economic interest, the more do the rules that belong to it tend to become the same in all countries, for in the domain of economic interest Reason and Science have full play. But the more the element of human emotion enters any department of law, as for instance that which deals with the relations of husband and wife, or of parent and child, or that which defines the freedom of the individual as against the State, the greater becomes the probability that existing divergences between the laws of different countries may in
