According to the former, the population of the United States, including Vermont, Kentucky, and Tennessee, which then were in their incipient condition of becoming States, but were not actually admitted, amounted to 3,929,827. Of this number the Northern States had 1,997,899, and the Southern 1,952,072, making a difference of only 45,827 in favor of the former States. The number of States, including Vermont, Kentucky, and Tennessee, were sixteen; of which eight, including Vermont, belonged to the northern section, and eight, including Kentucky and Tennessee, to the southern,--making an equal division of the States between the two sections, under the first census. There was a small preponderance in the House of Representatives, and in the Electoral College, in favor of the northern, owing to the fact that, according to the provisions of the Constitution, in estimating federal numbers five slaves count but three; but it was too small to affect sensibly the perfect equilibrium which, with that exception, existed at the time. Such was the equality of the two sections when the States composing them agreed to enter into a Federal Union. Since then the equilibrium between them has been greatly disturbed. According to the last census the aggregate population of the United States amounted to 17,063,357, of which the northern section contained 9,728,920, and the southern 7,334,437, making a difference in round numbers, of 2,400,000. The number of States had increased from sixteen to twenty-six, making an addition of ten States. In the meantime the position of Delaware had become doubtful as to which section she properly belonged. Considering her as neutral, the Northern States will have thirteen and the Southern States twelve, making a difference in the Senate of two senators in favor of the former. According to the apportionment under the census of 1840, there were two hundred and twenty-three members of the House of Representatives, of which the North-ern States had one hundred and thirty-five, and the Southern States (considering Delaware as neutral) eighty-seven, making a difference in favor of the former in the House of Representatives of forty-eight. The difference in the Senate of two members, added to this, gives to the North in the Electoral College, a majority of fifty. Since the census of 1840, four States have been added to the Union--Iowa, Wisconsin, Florida, and Texas. They leave the difference in the Senate as it was when the census was taken; but add two to the side of the North in the House, making the present majority in the House in its favor fifty, and in the Electoral College fifty-two.