The unusual sacrifices that deserve extra compensation are connected with the costs of industrial functions and the disagreeable character of occupations. Under the first head are included the expense of industrial training and the debilitating effects of the work. Not only justice to the worker but a farsighted view of social welfare, dictate that all unusual costs of preparation for an industrial craft or profession should be repaid in the form of unusual compensation. This means something more than a living wage. For the same reasons the unusual hazards and disability resulting from industrial accidents and diseases should be provided for by higher remuneration. In the absence of such provision, these costs will have to be borne by parents, by society in the form of charitable relief, or by the worker himself through unnecessary suffering and incapacity. The industry that does not provide for all these costs is a social parasite, the workers in it are deprived of just compensation for their unusual sacrifices, and society suffers a considerable loss through industrial friction and diminished productive efficiency. In so far, however, as any of the foregoing occupational costs are borne by society, as in the matter of industrial education, or by the employer, as by the devices of accident compensation or sickness insurance, they do not demand provision in the form of extra wages. Other unusual sacrifices that entitle the worker to more than living wages, are inherent in disagreeable or despised occupations. The scavenger and the bootblack ought to get more than the performers of most other unskilled tasks. On the principles of comparative individual desert, they should receive larger remuneration than many persons who are engaged upon skilled but relatively pleasant kinds of work. For if they were given the choice of expending the time and money required to fit them for the latter tasks, or of taking up immediately their present disagreeable labour, they would select the more pleasant occupations, for the same or even a smaller remuneration. And the majority of those who are now in the more skilled occupations would make the same choice. Hence the sacrifices inherent in disagreeable kinds of work are in many cases as great as or greater than the sacrifices of preparation for the more pleasant tasks; consequently the doers of the former are relatively underpaid. If all wages were regulated by some supreme authority according to the principles of complete justice, the workers in disagreeable occupations would receive something more than living wages. Nor would this determination of rewards be in any way contrary to social welfare or the principle of maximum net results; for the superior attractiveness of the other kinds of work would draw a sufficient supply of labour to offset the advantage conferred by higher wages upon the disagreeable occupations. The main reason why the latter kind