jurists were chiefly teachers and philosophers. Happily they had been trained to accept the Roman law as something of paramount authority and so were able to give natural law a content by assuming its identity with an ideal form of the law which they knew and in which they had been trained. As the Roman jurisconsult built in the image of the old law of the city, they built on idealized Roman lines. If Roman law could no longer claim to be embodied authority, they assumed that, corrected in its details by a juristic-philosophical critique, it was embodied reason.

Both of these ideas, natural rights and an ideal form of the actual law of the time and place as the jural order of nature, were handed down to and put to new uses in the nineteenth century. In the growing law of the seventeenth and eighteenth centuries they were but guides to lead growth into definite channels and insure continuity and permanence in the development of rules and doctrines. Whether natural rights were conceived as qualities of the natural man or as deductions from a compact which expressed the nature of man, the point was, not that the jurist should keep his hands off lest by devising some new precept or in reshaping some old doctrine he infringe a fundamental right, but that he should use his hand freely and skilfully to shape rules and doctrines and institutions that they might be instruments of achieving the ideal of human existence in a "state of nature." For the state of nature, let us remember, was a state which expressed the ideal of man as a rational creature. If a reaction from the formal over-refinement of the eighteenth century came to identify this with a primitive simplicity, in juristic hands it was the simplicity of a rational ideal in place of the cumbrous complexity of legal systems which had become fixed in their ideas in the stage of the strict law. Thus Pothier, discussing the Roman categories of contract and rejecting them for the "natural" principle that man, as a moral creature, should keep his engagements, declares that the complex and arbitrary system of Roman law, made up of successive additions at different times to a narrow primitive stock of legally enforceable promises, is not adhered to because it is "remote from simplicity." Again the ideal form of the actual law, which gave content to natural law, was not an ideal form of historically found principles, constraining development for all time within historically fixed bounds, as in the nineteenth century, but an ideal form of the ratio legis—of the reason behind the rule or doctrine or institution whereby it expressed the nature of the rational human being guided only by reason and conscience in his relations with similar beings similarly guided. Attempts to fix the immutable part of law, to lay out legal charts for all time, belong to the transition to the maturity of law. The eighteenth-century projects for codification and the era of codification on the Continent, in which the results of two centuries of growth were put in systematic form to serve as the basis of a juristic new start, in form rested upon the theory of natural law. By a sheer effort of reason the jurist could work out a complete system of deductions from the nature of man and formulate them in a perfect code. Go to, let him do so! This was not the mode of thought of a period of growth but rather of one when growth had been achieved and the philosophical theory of a law of nature was called upon for a new kind of service.

At the end of the eighteenth century Lord Kenyon had determined that "Mansfield's innovations" were not to go on. Indeed some of them were to be undone. Equity was soon to be systematized by Lord Eldon and to become "almost as fixed and settled" as the law itself. The absorption of the law merchant was complete in its main lines although in details it went on for two decades. Moreover the legislative reform movement which followed only carried into detail the ideas which had come into the law in the two preceding centuries. For a time the law was assimilating what had been taken up during the period of growth and the task of the jurist was one of ordering, harmonizing and systematizing rather than of creating. Likewise law had been codifying on the Continent. Down to the end of the nineteenth century the codes, whatever their date, in reality speak from the end of the eighteenth century and with few exceptions are all but copies of the French code of 1804. Where there were no codes, the hegemony of the historical school led to a movement back to the law of Justinian which would have undone much of the progress of the last centuries. The energies of jurists were turned for a time to analysis, classification and system as their sole task. Where codes obtained, analytical development and dogmatic exposition of the text, as a complete and final statement of the law, was to occupy jurists exclusively for the next hundred years. We may well think of this time, as it thought of itself, as a period of maturity of law. The law was taken to be complete and self-sufficient, without antinomies and without gaps, wanting only arrangement, logical development of the implications of its several rules and conceptions, and systematic exposition of its several parts. Legislation might be needed on occasion in order to get rid of archaisms which had survived the purgation of the two prior centuries. For the rest, history and analysis, bringing out the idea behind the course of development of legal doctrines and unfolding their logical consequences, were all the apparatus which the jurist required. He soon affected to ignore philosophy and often relegated it to the science of legislation, where within narrow limits it might still be possible to think of creating.

Yet the nineteenth century was no more able to get on without philosophy of law than were its predecessors. In place of one universally recognized philosophical method we find four well-marked types. But they all come to the same final results, are marked by the same spirit and put the same shackles upon juristic activity. They are all modes of rationalizing the juristic desires of the time, growing out of the pressure of the interest in the general security by way of reaction from a period of growth and in the security of acquisitions and security of transactions in a time of economic expansion and industrial enterprise.

In the United States, since the natural law of the eighteenth-century publicists had become classical, we relied largely upon an American variant of natural law. It was not that natural law expressed the nature of man. Rather it expressed the nature of government. One form of this variant was due to our doctrine that the common law of England was in force only so far as applicable to our conditions and our institutions. The attempt to put this doctrine philosophically regards an ideal form of the received common law as natural law and takes natural law to be a body of deductions from or implications of American institutions or the nature of our polity. But yesterday the Supreme Court of one of our states laid down dogmatically that primogeniture in estates tail (which by the way is still possible in one of the oldest of the original states) could not co-exist with "the axioms of the constitution" which guarantees to each state a republican form of government. More generally, however, the American variant of natural law grew out of an attempt at philosophical statement of the power of our courts with respect to unconstitutional legislation. The constitution was declaratory of principles of natural constitutional law which were