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180 or other tenure invented en bloc by any philosopher and adopted by legislative act will ever supplant it. To talk of any such thing is to manifest a total misconception of the facts and laws which it is the province of sociology to investigate. The case is less in magnitude but scarcely less out of joint with all correct principle when it is proposed to adopt a unique tax on land, in a country where the rent of land is so low that any important tax on land exceeds it, and therefore becomes indirect, and where also political power is in the hands of small landowners, who hold, without ever having formulated it, a doctrine of absolute property in the soil such as is not held by any other landowners in the world.

Sociology must exert a most important influence on political economy. Political economy is the science which investigates the laws of the material welfare of human societies. It is not its province to teach individuals how to get rich. It is a social science. It was the first branch of sociology which was pursued by man as a science. It is not strange that when the industrial organization of society was studied apart from the organism of which it forms a part it was largely dominated over by arbitrary dogmatism, and that it should have fallen into disrepute as a mere field of opinion, and of endless wrangling about opinions for which no guarantees could be given. The rise of a school of "historical" economists is itself a sign of a struggle towards a positive and scientific study of political economy, in its due relations to other social sciences, and this sign loses none of its significance in spite of the crudeness and extravagance of the opinions of the historical economists, and in spite of their very marked tendency to fall into dogmatism and hobby-riding. Political economy is thrown overboard by all groups and persons whenever it becomes trouble-