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 of the public administration for salaries which, as their recipient must be perfectly conscious, bear no relation to the income which it would be open to him to earn in commercial competition.

On the whole, then, we may take it that the principle of the super-tax is based on the conception that when we come to an income of some £5,000 a year we approach the limit of the industrial value of the individual. We are not likely to discourage any service of genuine social value by a rapidly increasing surtax on incomes above that amount. It is more likely that we shall quench the anti-social ardour for unmeasured wealth, for social power, and the vanity of display.

These illustrations may suffice to give some concreteness to the conception of economic justice as the maintenance of social function.