8. He may call extra sessions of Congress for special reasons, and may adjourn it in case of disagreement between the two houses as to the time of adjournment. It is his duty to give information to Congress, at the commencement of each session, of the state of the country, and to recommend to it such legislative enactments as he may judge are required. This is called “The President’s Message,” and is looked for with much interest in this and in foreign countries, since his position makes him intimately acquainted with every subject relating to the public welfare. When he considers that the occasion demands it, or when he is requested by Congress to give information on a special point, he communicates with them by similar documents, called messages. He may be impeached for treason, bribery, or other high crimes, by the House of Representatives, and tried by the Senate, the Chief Justice of the Supreme Court presiding over that body during the trial, and in case of conviction is removed from office. 9. It will be seen that he possesses great power, and that he is almost overwhelmed by responsibilities. The members of his cabinet are his constitutional advisers, and share more or less of this responsibility, although his will may override them all if he so chooses. There are many provisions for preventing an abuse of power in the Constitution and in the laws of Congress, but all history proves that nothing but watchfulness and wisdom on the part of the people can preserve to them their rights and liberties. Power, wherever lodged, is naturally aggressive. Fortunately the people themselves in this country are the _source_ of power, and may legally restrain its exercise in their representatives and executive officers, when it threatens to become excessive. The following are the names of all the Presidents, from Washington, the first, down to the present incumbent: George Washington, Va., 30th April, 1789, to 4th March, 1797—seven years ten months and four days. John Adams, Mass., 4th March, 1797, to 4th March, 1801—four years. Thomas Jefferson, Va., 4th March, 1801, to 4th March, 1809—eight years. James Madison, Va., 4th March, 1809, to 4th March, 1817—eight years. James Monroe, Va., 4th March, 1817, to 4th March, 1825—eight years. John Quincy Adams, Mass., 4th March, 1825, to 4th March, 1829—four years. Andrew Jackson, Tenn., 4th March, 1829, to 4th March, 1837—eight years. Martin Van Buren, N. Y., 4th March, 1837, to 4th March, 1841—four years. William H. Harrison, O., 4th March, 1841, to 4th April, 1841—one month. John Tyler, Va., 4th April, 1841, to 4th March, 1845—three years and eleven months. James K. Polk, Tenn., 4th March, 1845, to 4th March, 1849—four years. Zachary Taylor, La., 4th March, 1849, to 9th July, 1850—one year four months and five days. Millard Fillmore, N. Y., 9th July, 1850, to 4th March, 1853—two years seven months and twenty-six days.