Our late advienes say the rebels are oecupying Frederick City in large force and ono rumor says they are advancing on Washington, anotber on Baltiinore, and another into Pennsylvania. Gen. McCr.EU.AN is advancing upon tbeir position with a large force and news of a battle may be duily expected. Gov. Curtís lias also callod out every ablebodied man ia Pennsylvania, and will meet the enemy in front. Wo hope for the best. - Gen. has command of the fortiSoutions and forces on the south of the Potomac, and no fears aro indulged of the enemy in that direction. - Exoitement continúes at Cincinnati, and an attaek is daily expected. We thiuk it is prepared for. - Gen. Buelt, has concentrated bis forces at Nasbville. - Gen. Pope, in liis report, charges bis defeat to Gens. McCleí.lan and Fit, John Porter. Gen. Pope's reports are never reliablo. J53T Tlie New York Democratie State Convention was held on Wedneschiy and Ilorntio Seymour nominateil for Governor by nclamation. - In MnssachiiKets tho Ilepublican State Convention, held on Wednesday, nominatod the present State ofEcers (or re-electioD.