The chief fact, therefore, of our national history is that from this vigorous tap-root has grown a vast constitutional system,--a system branching and expanding in statutes and judicial decisions, as well as in unwritten precedent; and one of the most striking facts, as it seems to me, in the history of our politics is, that that system has never received complete and competent critical treatment at the hands of any, even the most acute, of our constitutional writers. They view it, as it were, from behind. Their thoughts are dominated, it would seem, by those incomparable papers of the "Federalist," which, though they were written to influence only the voters of 1788, still, with a strange, persistent longevity of power, shape the constitutional criticism of the present day, obscuring much of that development of constitutional practice which has since taken place. The Constitution in operation is manifestly a very different thing from the Constitution of the books. "An observer who looks at the living reality will wonder at the contrast to the paper description. He will see in the life much which is not in the books; and he will not find in the rough practice many refinements of the literary theory."[1] It is, therefore, the difficult task of one who would now write at once practically and critically of our national government to escape from theories and attach himself to facts, not allowing himself to be confused by a knowledge of what that government was intended to be, or led away into conjectures as to what it may one day become, but striving to catch its present phases and to photograph the delicate organism in all its characteristic parts exactly as it is to-day; an undertaking all the more arduous and doubtful of issue because it has to be entered upon without guidance from writers of acknowledged authority.