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decision the more valuable for his purpose. That process by which old principles and old phrases are charged with a new content, is from the lawyer's point of view an evolution of the true intent and meaning of the old law; from the historian's point of view it is almost of necessity a process of perversion and misunderstanding. Thus we are tempted to mix up two different logics, the logic of authority, and the logic of evidence. What the lawyer wants is authority and the newer the better; what the historian wants is evidence and the older the better. This when stated is obvious; but often we conceal it from ourselves under some phrase about 'the common law'. It is possible to find in modern books comparisons between what Bracton says and what Coke says about the law as it stood before the statutes of Edward I., and the writer of course tells us that Coke's is 'the better opinion'. Now if we want to know the common law of our own day Coke's authority is higher than Bracton's and Coke's own doctrines yield easily to modern decisions. But if we are really looking for the law of Henry III.'s reign, Bracton's lightest word is infinitely more valuable than all the tomes of Coke. A mixture of legal dogma and legal history is in general an unsatisfactory compound. I do not say that there are not judgments and text-books which have achieved the difficult task of combining the results of deep historical research with luminous and accurate exposition of existing law—neither confounding the dogma nor perverting the history; but the task is difficult. The lawyer must be orthodox otherwise he is no lawyer; an orthodox history seems to me a contradiction in terms. If this
