BATTLE AT NAUVOO—FROM TWELVE TO FIFTEEN KILLED!—From the St. Louis Republican of the 14th inst., we learn that a battle took place between the Mormons and the anti-Mormons, on the 11th inst. The anties had encamped the day previous within three miles of Nauvoo, and on the morning of the 11th they took up their line of march for the city. On ascertaining the movements of their foes, the Mormons beat to quarters, mustered between three and five hundred men, and went forth to meet their adversaries. The antagonistic parties met about one mile East of the Temple, when a battle commenced.— The "Saints" and the "Gentiles" fired upon each other for two hours, but the distance was so great that their leaden missiles were materially deprived of their death-dealing properties. Having somewhat appeased their wrath, the belligerents drew off; each party returning to its original position in the morning. The Mormons, in this affair, had one man killed and two badly wounded. The anties, numbering upwards of eight hundred, returned to camp with a loss of from eight to fifteen killed. The excitement was very great in the vicinity, and it was generally supposed that the battle would be resumed, either that evening or the next morning.