Admitting the difficulties involved in framing a Federal system we must at the same time remember the long and peculiar training which our race has had in dealing with them. Acute minds have been turned upon the problem, systems have been framed and adopted by vast populations, and time has tested {51} the results. The experience of the United States extends over more than a century of strenuous national life and wonderful growth. In the light of that experience, and to meet her own necessities, Canada faced the question a quarter of a century ago, and framed a system which works well and gives assurance of permanence. Encouraged by these examples, Australia is taking steps to frame a similar union. Thus three great English-speaking communities have had their thoughts fixed with anxious attention upon Federal problems. In forming or in carrying on these three great English-speaking federations, fundamental principles have been so exhaustively studied and so thoroughly tested that the conditions that must control Federal organization may now be stated with a very considerable degree of accuracy. Germany, Switzerland, and Austro-Hungary all furnish data which assist in making conclusions definite. An adoption of Federalism is therefore no longer a leap in the dark. The losses and gains which it involves can be weighed and measured. With such a range of history and experience to fall back upon it ought to be possible for a practical self-governing people to distinguish between the relations they wish to control through the smaller machinery of local government, and those they are content to submit to the larger machinery of a central government: to draw, in short, a true line of division between those interests which are peculiar to each {52} member of the Federation and those which are common to all.