It seemed desirable to adopt a historical method of exposition, not simply describing our political institutions in their present shape, but pointing out their origin, indicating some of the processes through which they have acquired that present shape, and thus keeping before the student's mind the fact that government is perpetually undergoing modifications in adapting itself to new conditions. Inasmuch as such gradual changes in government do not make themselves, but are made by men—and made either for better or for worse—it is obvious that the history of political institutions has serious lessons to teach us.