This work may or may not be less thought-awakening than work with simple tools. There is a general improvement along all the lines of intelligence, morals, and health. The conditions in the cities as regards health and morals are approaching those of agricultural communities. While many factory districts are forlorn, there may be seen around many factories more happy conditions, better buildings, better sanitation, increased leisure for workers, workmen's clubs, educational agencies, and many other evidences of civic and social progress. [Sidenote: Problems of large industry] 6. _The great social consequences flowing from the concentration of industry and wealth are the most serious problems in the relation of machinery to labor._ The ownership of tools was widely diffused in medieval times. It is not yet evident how many can own a share in great factories, but the control drifts into few hands. It is not yet clear what social effects great corporations will have on our democratic institutions. Many problems of large industry remain to be solved in the near future. The question in the old form, as to the effect of machinery on labor, is no longer open. It has been clearly answered by experience and explained by theory: the economic effect of machinery is to lift the productiveness and efficiency of the average man. The benefits are unequally distributed, but nearly all share in them to some degree. The question which the future will have to answer is, What will be the social and political effects of the great fortunes that have been made possible by the enormous development of machinery? CHAPTER 27 TRADE-UNIONS § I. THE OBJECTS OF TRADE-UNIONS [Sidenote: Definition and purposes of trade-unions] 1. _A trade-union is an association of wage-workers for purposes of mutual information, mutual help, and for the raising of wages._ The term trade-union is used in a general sense both of combinations of workers in the same trade, and of men in different trades, though usually the latter are called _labor_-unions. The "Knights of Labor" is a good example of the labor-union, the "American Federation of Labor" of a combination of trade-unions. The Knights of Labor is composed of local branches to which workers of every class except lawyers and saloon-keepers are admitted. The Federation of Labor, however, is composed of chapters, or lodges, that are homogeneous, all the men of each lodge being in the same trade.