"The cultivation of statistics must be the source of all future improvement in the science of political economy, because it is to the table of the statistician that the economist must look for his facts; and all speculations not founded upon facts, though they may be admired and applauded when first propounded, will, in the end, assuredly be forgotten. Statistical science may almost be regarded as the creation of this age. The word statistics was invented in the middle of the last century by a German professor,[1] to express a summary view of the physical, moral, and social conditions of States; he justly remarked, that a numerical statement of the extent, density of population, imports, exports, revenues, etc., of a country, more perfectly explained its social condition than general statements, however graphic or however accurate. When such statements began to be collected, and exhibited in a popular form, it was soon discovered that the political and economical sciences were likely to gain the position of physical sciences; that is to say, they were about to obtain records of observation, which would test the accuracy of recognized principles, and lead to the discovery of new modes of action. But the great object of this new science is to lead to the knowledge of human nature; that is, to ascertain the general course of operation of man's mental and moral faculties, and to furnish us with a correct standard of judgment, by enabling us to determine the average amount of the past as a guide to the average probabilities of the future. This science is yet in its infancy, but has already produced the most beneficial effects. The accuracy of the tables of life have rendered the calculations of rates of insurance a matter of much greater certainty than they were heretofore; the system of keeping the public accounts has been simplified and improved; and finally, the experimental sciences of medicine and political economy, have been fixed on a firmer foundation than could be anticipated in the last century. Even in private life this science is likely to prove of immense advantage, by directing attention to the collection and registration of facts, and thus preventing the formation of hasty judgments and erroneous conclusions." The compiler, or rather the superintendent of the seventh United States census, Prof. De Bow, a gentleman of more than ordinary industry and practical learning, who, in his excellent Review, has, from time to time, displayed much commendable zeal in his efforts to develop the industrial resources of the Southern and South-western states, and who is, perhaps, the greatest statistician in the country, says:--