Latest from Missouri.
Gen. Price's force — movements of Gen. Fremont--Fremont's Removal and his Successor — a skirmish on Iron Mountain, &c St. Louis, Oct. 20.
--A messenger from Gen. Fremont's headquarters at Warsaw reached Syracuse, Mo., of the 17th inst., and reported that Gen. Price had made a stand in Adair county, 25 miles from Osceola, with 25,000 well armed and disciplined troops, and a large force of militia.
Gen. Fremont had begun preparations to lay a pontoon bridge across the Osage river, and it is supposed his army would cross on the night of the 16th inst. He intended to push forward and force Gen. Price to fight or retreat.
A dispatch from Ironton, dated on the 17th inst., says that no other bridge than that on the Big river has been interfered with on the Iron Mountain railway.
No rebels are known to be near the railway, but are reported to be in large force 25 miles below Ironton.
Nothing definite, however, is known as to their number or designs.
A dispatch to the Republican, dated at Syracuse, Mo., on the 18th inst., states that Gen. Price has acquired new hope from the prospect of large reinforcements.
It is expected that he will defeat Gen. Fremont's army, divide his forces, and take St. Louis and Jefferson City.
The Republican learns that the work on the fortifications around St. Louis is to be suspended.
Guns, however, are to be mounted and everything completed within eight days.
The Republican also reports a skirmish on the Iron Mountain on the 17th inst. The Southerners were driven back with heavy loss.
--The Cincinnati Commercial, of the 19th inst., learns that Gen Fremont will be removed on the 22d inst. Gen Hunter is to succeed Gen. Fremont. The Cincinnati Gazette says that Gen. Fremont has been removed by the positive order of President Lincoln.
