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30 themselves with diligence to their proper duties, with much benefit both to themselves and to the federal system. This is not saying that the policy of internal improvements was either avoidable, unconstitutional, or unwise, but only that it has been carried too far; and that, whether carried too far or not, it must in any case have been what it is now seen to be, a big weight in the federal scale of the balance.

Still other powers of the federal government, which have so grown beyond their first proportions as to have marred very seriously the symmetry of the “literary theory” of our federal system, have strengthened under the shadow of the jurisdiction of Congress over commerce and the maintenance of the postal service. For instance, the Supreme Court of the United States has declared that the powers granted to Congress by the Constitution to regulate commerce and to establish post-offices and post-roads “keep pace with the progress of the country and adapt themselves to new developments of times and circumstances. They extend from the horse with its rider to the stage-coach, from the sailing vessel to the steamer, from the coach and the steamer to the railroad, and from the railroad to the telegraph, as these new agencies are successively brought into use to meet the demands of increasing population and wealth. They are intended