Four Vice-Presidents were subsequently elected Presidents, namely: John Adams in 1796; Thomas Jefferson in 1800 and 1804; Martin Van Buren in 1836; and Theodore Roosevelt in 1904. The dates given have reference to the election by vote of the electors in the several States by whom the President and Vice-President were subsequently chosen. Six Vice-Presidents died in office: namely, Clinton, Gerry, King, Wilson, Hendricks, and Hobart. In the Presidential contest of 1836, Martin Van Buren received a majority of the electoral votes for President, but no candidate received a majority for Vice-President. By Constitutional requirement the duty of electing a Vice-President then devolved upon the Senate, the candidates from whom such choice was to be made being restricted to the two who had received the highest number of electoral votes. One of these, Richard W. Johnson of Kentucky, was duly elected by the Senate. The only Vice-President who resigned the office was John C. Calhoun. This occurred in 1832, and Mr. Calhoun soon thereafter took his seat in the Senate, to which body he had been elected by the Legislature of South Carolina. Five Vice-Presidents have, upon the death of the President, succeeded to the Presidency. The first President to die during his incumbency of the great office, was William Henry Harrison. His death occurred April 4, 1841, just one month after his inauguration. The Vice-President John Tyler, then at his country home in Virginia, was officially notified of the event, and upon reaching the seat of Government at once took the oath of office as President. There was much discussion for a time in and out of Congress as to his proper title, whether "Vice-President of the United States acting as President," or "President." The language of the Constitution however, is clear, and it is no longer controverted that upon the death of the President the Vice-President becomes, in name as in fact, President. Upon the death of President Zachary Taylor, July 9, 1850, Vice-President Millard Fillmore succeeded to the Presidency, and was at a later date an unsuccessful candidate for election to that office. The third Vice-President who reached the Presidency by succession was Andrew Johnson; this occurred April 15, 1865, the day following the assassination of President Lincoln. President Garfield was shot July 2, 1881, and died in September of that year, when he was succeeded by Vice-President Chester A. Arthur. Vice-President Roosevelt was the successor of President McKinley, who died by the hand of an assassin in September, 1901.