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nius. Their results are seen in the numerous improvements by which human labor is abridged. Without going into details, it may be sufficient to say, that many of the applications of steam to locomotion and manufactures, of electricity and magnetism to the production of mechanical motion, the electrical telegraph, the registration of astronomical phenomena, the art of multiplying engravings, the introduction and improvement among us of all the important inventions of the Old World, are striking indications of the progress of this country in the useful arts. The net-work of railroads and telegraphic lines by which this vast country is reticulated have not only developed its resources, but united emphatically, in metallic bands, all parts of the Union. The hydraulic works of New York, Philadelphia, and Boston surpass in extent and importance those of ancient Rome. But we have not confined our attention to the immediate application of science to the useful arts. We have entered the field of original research, and have enlarged the bounds of scientific knowledge. Sixty years ago, besides the brilliant discoveries of Franklin in electricity, scarcely any thing had been done among us in the way of original discovery. Our men of science were content with repeating the experiments and diffusing a knowledge of the discoveries of the learned of the Old World, without attempting to add a single new fact or principle to the existing stock. Within the last twenty-five or thirty years a remarkable improvement has taken place in this respect. Our natural history has been explored in all its branches; our geology has been investigated with results of the highest interest to practical and theoretical science. Discoveries have been made in pure chemistry and electricity, which have received the approbation of the world. The advance which has been made in meteorology in this country, within the last twenty years, is equal to that made during the same period in all the world besides. In 1793 there was not in the United States an instrument with which a good observation of the heavenly bodies could be made. There are now instruments at Washington, Cambridge, and Cincinnati equal to those at the best European observatories, and the original discoveries in astronomy within the last five years, in this country, are among the most brilliant of the age. I can hardly refrain from saying, in this connection, that the "Celestial Mechanics" o
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