(3) But not all consumption, the object of which is to gratify desire, is to be reckoned in this category. There are certain pleasures which ennoble and really enrich those who participate in them. There are desires the gratification of which enlarges the volume of one’s being. They are related not so much to man’s productive capability as to that which is the final cause of all production, and to which all wealth is only a means. The labor, material, implements, and whatever else is consumed in the production of the works or effects of genuine art, result in the most _real wealth_ that exists. By this is meant not merely pictures, statues, books, carved work, tasteful tapestries, and similar objects which can be bought and sold, but also oratorios which you may hear but once; magnificent parks to which you may be admitted, but may never own; great actors and singers whose genius may be exhibited to others, but not possessed by them. It is true that much which properly belongs here may be so consumed as to deserve only a place in the second class; but it may also have those higher and nobler uses which imply production in the best sense. 5. _Public consumption_ is the expenditure of means for society in its aggregate capacity. It has reference principally to the support of those agencies which are implied in the term _government_. The reasons for the necessity of such expenditures have already been given. The purposes to which such consumption is properly applied may be grouped as follows: (_a_) The support and administration of government. This embraces compensation to executive, legislative and judicial officers, and expenditure for public buildings. (_b_) For works of public convenience. Here are included the paving and lighting of streets, water-works and sewerage. (_c_) For advancing science and promoting intelligence, by means of exploring expeditions, geological surveys, meteorological and astronomical observations, etc. (_d_) For the promotion of popular education. (_e_) For the support of the poor and the relief of the afflicted. (_f_) For national defense. 6. The general law of economical consumption, both individual and public, is that only so much and such a quality should be consumed as is necessary to effect the purpose designed, whether that be further production or individual gratification. It is nearly the same in the case of labor. In relation to the work to be done, the character, ability and skill of the laborer should be considered. READINGS IN ART. II.—SCULPTURE: GRECIAN AND ROMAN.