The first part contains an attempt to settle and render more precise the use of terms in labour-legislation, as well as to classify the different aims and purposes with which it sets out, and then passes on to what will probably be to English readers the most interesting part of the book--a discussion of the Maximum Working Day in general, and the Eight Hours Day in particular. Here the author commits himself in favour of a legal ten or eleven hours day for industrial work, with special provisions for specially dangerous or exhausting trades, and with freedom of contract below that limit, and brings evidence to show that such a step has already been justified by experience. But after a careful discussion of what it involves, and after disentangling with some care the difficulties with which it is surrounded, he pronounces emphatically against the universal compulsory Eight Hours Day, which he regards as not practicable for, at any rate, a very long time to come. On the vexed question of the labour of married women, Dr. Schaeffle is less explicit, and seems somewhat to halt between two opinions. He will not commit himself to the desirability of an absolute prohibition of it, but it seems clear that his sympathies lean that way. The discussion of the Social Democratic proposals in the German Reichstag, known as the Auer Motion, is very careful and appreciative, but Dr. Schaeffle takes care to disentangle the really Socialistic element in them, and will only support the introduction of Labour Boards and Labour Chambers as consultative bodies, not as holding any power of control over the Inspectorate. He is willing to allow to the working classes full vent for their grievances, but dreads to see them entrusted with the actual power of remedying them. His plea for more international exchange of opinions and international uniformity of practice is one which must be echoed by all who have the cause of Labour at heart. To that larger sense of brotherhood which extends beyond the bounds of country we must look for the accomplishment of the Social Revolution which is surely on the way. On a task so large, and involving such far-reaching issues to the progress of the world, the nations must take hands and step together if the results are to be of permanent value. The paralyzing dread of war, the competition of foreign workmen, the familiar Capitalist weapon that "trade will leave the country" if the workers' claims are conceded--all these dangers in the way can only be met by the drawing closer of international bonds, by the intercommunication of those in all countries who are fired by the new ideals, and are making towards an ordered Social peace out of the chaos of conflicting and competing energies and interests in which we live.