Fresh from the scenes of the "three days" revolution in France, the author came among us to observe, carefully and critically, the operation of the new principle on which the happiness of his country, and, as he seems to believe, the destinies of the civilized world, depend. Filled with the love of liberty, but remembering the atrocities which, in its name, had been committed under former dynasties at home, he sought to discover the means by which it was regulated in America, and reconciled with social order. By his laborious investigations, and minute observations of the history of the settlement of the country, and of its progress through the colonial state to independence, he found the object of his inquiry in the manners, habits, and opinions, of a people who had been gradually prepared, by a long course of peculiar circumstances, and by their local position, for self-government; and he has explained, with a pencil of light, the mystery that has baffled Europeans and perplexed Americans. He exhibits us, in our present condition, a new, and to Europeans, a strange people. His views of our political institutions are more general, comprehensive, and philosophic than have been presented by any writer, domestic or foreign. He has traced them from their source, democracy--the power of the people--and has steadily pursued this foundation-principle in all its forms and modifications: in the frame of our governments, in their administration by the different executives, in our legislation, in the arrangement of our judiciary, in our manners, in religion, in the freedom and licentiousness of the press, in the influence of public opinion, and in various subtle recesses, where its existence was scarcely suspected. In all these, he analyzes and dissects the tendencies of democracy; heartily applauds where he can, and faithfully and independently gives warning of dangers that he foresees. No one can read the result of his observations without better and clearer perceptions of the structure of out governments, of the great pillars on which they rest, and of the dangers to which they are exposed: nor without a more profound and more intelligent admiration of the harmony and beauty of their formation, and of the safeguards provided for preserving and transmitting them to a distant posterity. The more that general and indefinite notions of our own liberty, greatness, happiness, &c., are made to give place to precise and accurate knowledge of the true merits of our institutions, the peculiar objects they are calculated to attain or promote, and the means provided for that purpose, the better will every citizen be enabled to discharge his great political duty of guarding those means against the approach of corruption, and of sustaining them against the violence of party commotions. No foreigner has ever exhibited such a deep, clear, and correct insight of the machinery of our complicated systems of federal and state governments.