nature. It is not until the machine age is well under way and the machine technology has come to occupy the land, that faith in the theorem of the conservation of energy has grown robust enough to let the scientists lose interest in all questions of creation. The tenet has died by neglect, not by confutation. That it has done so among the adepts of the material sciences, and that it is doing so among the lay population at large in the modern industrial communities, is probably to be credited to the discipline of the machine process and the technological conceptions to which that discipline conduces. It conduces to this outcome in more than one way. This modern technology is a technology of mechanical process; it looks to and takes care of a sequence of mechanical action, rather than to the conditions of its inception or the sequel of its conclusion. A mind imbued with the logic of this machine process does not by habitual proclivity or with incisive effect attend to these alien matters that have no meaning within the horizon of that logic. The creative augmentation of material objects is a matter lying without the scope of the machine’s logic. As has already been remarked, the principle (habit of thought) that the quantity of material fact is constant is necessarily of ancient derivation and long growth. Taken in a presumptive sense, and held loosely as a commonplace of experience, it must have come up and attained some force very early in the workmanlike experience of the race. And the closer the application to the work in hand, the more consistently would this principle of common sense approve itself; so that it should, as indeed is sufficiently evident, be well at home among the habitual generalisations current in the days of handicraft; although it does not seem to have been generally accepted at that time as a principle necessarily having a universal application,--as witness the ready credence then given to theological dogmas of creation and the like. The habits of accountancy that came on under the price system, as the scope of the market grew larger with the growth and diversification of handicraft, seem to have had a great effect in extending and confirming the habitual acceptance of such a theorem. A strict balance, a running equilibrium of the quantitative items involved, is the central fact of the accountant’s occupation. And this habit of scrutiny and balancing of quantities, and a meticulous tracing out and accounting for any apparent excess or deficiency in the sums handled, pervades the community at large, though in a less pronounced fashion, as well as that fraction of the population employed in trade. The discipline of the handicraft system in this respect gains incontinently in scope and vigour as the growth of that technological system, with its characteristic business management, goes forward.