and slowly becoming separate from and supplementary to them, serves to regulate the minor actions of life. Finally, Mr. Spencer discusses industrial organization; that is to say, the development of productive and distributive agencies, considered in its necessary causes, comprehending not only the progressive division of labor and the increasing complexity of each industrial agency, but also the successive forms of industrial government as passing through like phases with political government. Many pages would be requisite adequately to describe the result of the inquiries prosecuted by Mr. Spencer during some twenty years, and embodied in the three volumes entitled "Principles of Sociology." The ultimate conclusions reached, however, may be summed up in a few paragraphs. It is the author's final conviction that, if the process of evolution, which, unceasing throughout past time, has brought life to its present height, continues throughout the future, as we cannot but anticipate, then, amid all the rhythmical changes in each society, amid all the lives and deaths of nations, amid all the supplantings of race by race, there will go on that adaptation of human nature to the social state which began when savages first gathered together into hordes for mutual defence,--an adaptation finally complete. Mr. Spencer foresees that many will think this a wild imagination. Though everywhere around them are creatures with structures and instincts which have been gradually so moulded as to subserve their own welfares and the welfares of their species, yet the immense majority ignore the implication that human beings, too, have been undergoing in the past, and will undergo in the future, progressive adjustments to the lives imposed on them by circumstances. There are a few, nevertheless, who think it rational to conclude that what has happened with all lower forms must happen with the highest forms,--a few who infer that among types of men those most fitted for making a well-working society will hereafter, as heretofore, from time to time, emerge and spread at the expense of types less fitted, until a fully fitted type has arisen.