At the same time, those forms of natural wealth which are the necessities of the whole nation and the monopolies of certain districts, mines for instance, or harbors, or sources of water-supply, must be “nationalised.” The salt and coal rings of to-day would be equally possible and equally inconvenient under a system which made the mining populations absolute joint owners of the mines. Even where the land was absolutely owned by local bodies, those bodies would still have to contribute to the national exchequer some proportion of their income. The actual size of the units would in each case be fixed by convenience; and it is very likely that the development of the County Government Act and of the parochial and municipal systems will soon provide us with units of government which could easily be turned into units of ownership. The savings of communities--if I may use the word community to express any Social Democratic unit from the parish to the nation--would probably take much the same form that the accumulation of capital takes nowadays: that is to say, they would consist partly of mills, machinery, railways, schools, and the other specialised materials of future industry, and partly of a stock of commodities such as food, clothing, and money, by which workers might be supported while performing work not immediately remunerative. The savings of individuals would consist partly of consumable commodities or of the means of such industry as had not been socialised, and partly of deferred pay for services rendered to the community, such pay taking the form of a pension due at a certain age, or of a sum of commodities or money payable on demand. Voluntary associations of all kinds, whether joint-stock companies, religious corporations, or communistic groups would, in the eyes of the Social Democratic State, consist simply of so many individuals possessing those rights of property which are allowed to individuals. They might perform many very useful functions in the future as in the past; but the history of the city companies, of the New River company, the Rochdale Pioneers, or the Church of England shows the danger of granting perpetual property rights to any association not co-extensive with the community, although such association may exist for professedly philanthropic objects. Even in the case of universities, where the system of independent property-owning corporations has been found to work best, the rights of the State should be delegated and not surrendered.