FROM THE "SEAT OF WAR."—The St. Louis Republican contains a letter from Warsaw, Hancock county, Illinois, near Nauvoo, dated 20th and 21st ult. Jo. Smith had ordered all the Mormons of the surrounding country to retire into Nauvoo, where, it was said 4000 men were under arms, the city having been placed under martial law. They were commanded by Jo Smith in person, who drilled them daily. Governor Ford arrived at Carthage, (another village near Nau-voo) on the morning of the 21st.
He said he approved of all that the people had done in their defence, and hoped they would not lay down their arms until the laws had am-ple satisfaction. He addressed a letter to the Mayor and Council of Nauvoo, asking them to send to him two of their most discreet citizens to make such explanations of their recent conduct as they may have to offer, and to come unarmed, or he would not receive them.
As a means of defence, and to the end that Joe Smith may not dictate his own terms, the Governor has ordered out the 4th brigade of militia, composed of the counties of Hancock, Brown and McDonough; part of the force to be stationed at Carthage, and the balance at War-saw, and to take such measures for the security of these places as the commanding officers may deem necessary. A message was also despatched by the Governor to Alton, with an order for all the arms in the State Arsenal, to be trans-ported to Warsaw, and used in arming the peo-ple.
The Governor will address the citizens of this section of the county, at this place, to-day, when it is expected that some three or four hundred of Col. Williams' regiment will be present; after which, he will meet Joe's commissioners, and then matters will be put in such a train as will lead to something decisive.
Considerable anxiety is felt to hear what kind of an answer Joe will send to Gov. Ford. If he should send such an one as he sent to Judge Thomas, when ordered to appear in court, "That he would see him d-d first," the Governor will doubtless take steps that may be rather unpleasant to his Prophetship
