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 embracing Medicine—first in its general aspect, as medical principle and practice; then in its great leading divisions of Physiology, Pathology, Therapeutics, &c.; again, as Special Pathology; finally, in such comparative minutiae as professional controversies and bills of mortality. The divisions of Art—the next class—are simple and obvious. They may be enumerated as Archæology, Costumes, Numismatics, Architecture, Painting, Sculpture, first as treated collectively, and then as treated separately; and, finally, Music. Fine Art is succeeded by Useful Art, and the interval bridged over by Field-Sports, Games of Chance, and Games of Skill. No subdivision of the Useful Arts has been attempted beyond the separation of Cookery and Domestic Economy from the rest, and the addition of two special sections, one for the catalogues of industrial exhibitions, the other for the voluminous and important publications of the South Kensington Museum.

The extensive and miscellaneous division which succeeds may, perhaps, best be defined under the head of Philosophy, alike in its scientific principles and in its application to human life. Commencing with Political Philosophy, or the Science of Government, it runs rapidly through the politics of the various nations, in the geographical order previously detailed, passes into Political Economy, with the allied subjects of Finance, Commerce, and Social Science; thence into Education, and, by the minor morals so intimately allied with the latter subject, into Ethics, including works on the