investigations that require a thorough knowledge of the laws and usages of nations; and they will sometimes be under the influence of impressions which will not suffer them to pay sufficient regard to those considerations of public policy which ought to guide their inquiries. There would of course be always danger that the rights of other nations might be infringed by their decisions, so as to afford occasions of reprisal and war. Though the proper province of juries be to determine matters of fact, yet in most cases legal consequences are complicated with fact in such a manner as to render a separation impracticable.
It will add great weight to this remark, in relation to prize causes, to mention that the method of determining them has been thought worthy of particular regulation in various treaties between different powers of Europe, and that, pursuant to such treaties, they are determinable in Great Britain, in the last resort, before the king himself, in his privy council, where the fact, as well as the law, undergoes a re-examination. This alone demonstrates the impolicy of inserting a fundamental provision in the Constitution which would make the State systems a standard for the national government in the article under consideration, and the danger of encumbering the government with any constitutional provisions the propriety of which is not indisputable.
My convictions are equally strong that great advantages result from the separation of the equity from the law jurisdiction, and that the causes which belong to the former would be improperly committed to juries. The great and primary use of a court of equity is to give relief in extraordinary cases, which are exceptions(2) to general rules. To unite the jurisdiction of such cases with the ordinary jurisdiction, must have a tendency to unsettle the general rules, and to subject every case that arises to a special determination; while a separation of the one from the other has the contrary effect of rendering one a sentinel over the other, and of keeping each within the expedient limits. Besides this, the circumstances that constitute cases proper for courts of equity are in many instances so