At a meeting of the Xational Democratie CommRtet, held in New York this day, t was unanimoualy voted that the next National Democratie Couvention, for the purpose of nominating candiiiates for the Presiden and Vice Presidency of the United Staten, be held at Chicago, Illinois, on MONIUY, JULY 4th, 1864. By a. vote of the Committee at a meeting held September 7, 18R3, the number of delégate for each State, ira Öxed at doublé the number of itn electoral votes. AUGUST BELMONT, Chairman. Frkdkbick Qy Pkince, Secretary. Nflw York,.Ian. 12. 1864.