4. Property in copyright and patent rights owned by authors and inventors. 5. Property in pure interest, including much agricultural rent. 6. Property in profits of luck and good fortune: "quasi-rents." 7. Property in monopoly profits. {64} 8. Property in urban ground rents. 9. Property in royalties. The first four kinds of property obviously accompany, and in some sense condition, the performance of work. The last four obviously do not. Pure interest has some affinities with both. It represents a necessary economic cost, the equivalent of which must be born, whatever the legal arrangements under which property is held, and is thus unlike the property represented by profits (other than the equivalent of salaries and payment for necessary risk), urban ground-rents and royalties. It relieves the recipient from personal services, and thus resembles them. The crucial question for any society is, under which each of these two broad groups of categories the greater part (measured in value) of the proprietary rights which it maintains are at any given moment to be found. If they fall in the first group creative work will be encouraged and idleness will be depressed; if they fall in the second, the result will be the reverse. The facts vary widely from age to age and from country to country. Nor have they ever been fully revealed; for the lords of the jungle do not hunt by daylight. It is probable, at least, that in the England of 1550 to 1750, a larger proportion of the existing property consisted of land and tools used by their owners than either in contemporary France, where feudal dues absorbed a considerable proportion of the peasants' income, or than in the England of 1800 to 1850, where the new capitalist manufacturers made hundreds per cent. while manual workers were goaded by starvation into ineffectual {65} revolt. It is probable that in the nineteenth century, thanks to the Revolution, France and England changed places, and that in this respect not only Ireland but the British Dominions resemble the former rather than the latter. The transformation can be studied best of all in the United States, in parts of which the population of peasant proprietors and small masters of the early nineteenth century were replaced in three generations by a propertyless proletariat and a capitalist plutocracy. The abolition of the economic privileges of agrarian feudalism, which, under the name of equality, was the driving force of the French Revolution, and which has taken place, in one form or another, in all countries touched by its influence, has been largely counter-balanced since 1800 by the growth of the inequalities springing from Industrialism.