ABSTRACT
Even for the preceding period we have been able to discern a considerable amount of agreement as regards the essentials of economic analysis and, in fact, a kind of average or modal System of general economics, deviations from which were the less frequent the greater they were. With much more confidence can we aver for the period under survey that there existed by about 1900, though not a unified science of economics, yet an engine of theoretical analysis whose basic features were the same everywhere. This should be obvious from our survey in the preceding chapter. But it may be helpful, in view of the different impression we get when we behold the troubled surface and in view of the different opinion entertained by many historians, to show this once more.
