The Union troops in Missouri had a fight with the rebels to-day, at a point called Millsville, on the North Missouri Railroad. The Union troops, consisting of eight hundred men, were fired into at that point, as they came up in a train of cars, and an engagement at once ensued. The number of the rebels is not known, but seven of their number were killed and several taken prisoners.--N. Y. Herald, July 18.
The Third Massachusetts Regiment sails from Fortress Monroe for Boston this evening in the Steamer Cambridge. They were reviewed by General Butler to-day.--The Sixth Massachusetts Regiment follows to-morrow.--Col. Max Weber's and Col. Baker's Regiments were to occupy Hampton, but the plan has been somewhat changed.--Brigadier-General Pierce returns with the Massachusetts Regiments.--Col. Duryea will be acting Brigadier-General in Hampton.--Several companies went out from Newport News last night to surprise, if possible, a body of light horse, which have for some time hovered in the vicinity.--National Intelligencer, July 18.
In the House of Representatives at Washington, the Committee on Commerce, in response to a resolution directing inquiry as to what measures are necessary to suppress privateering, and render the blockade of the rebel ports more effectual, reported a bill authorizing the Secretary of the Navy to hire, purchase, or contract for such vessels as may be necessary for a temporary increase of the navy, the vessels to be furnished with such ordnance, stores, and munitions of war as will enable them to render the most efficient service. According to the orders issued to their respective commands, the temporary appointments made of acting lieutenants, acting paymasters, acting surgeons, masters and masters' mates, and the rates of pay for these officers heretofore designated, are, by this bill, legalized and approved. For the purpose of carrying this act into effect to suppress piracy and render the blockade more effectual, three millions of dollars are appropriated. The bill was referred to the Committee on Naval Affairs.--A bill, authorizing the President to call out the militia to suppress rebellion, was passed unanimously.--The bill, authorizing the President to accept the services of five hundred thousand volunteers, was also passed.--The Senate's amendments to the Loan bill were all concurred in.--A joint resolution, conveying the thanks of Congress to Major-General George B. McClellan and the officers and soldiers under his command, for the recent brilliant victories over the rebels in Western Virginia, was unanimously adopted.
Lieut. W. H. Free, of the Seventh Ohio Regiment, from a company enlisted in Perry County, Ohio, arrived at Columbus in that State with four Secessionists. Free, with twenty-five men, was conducting a transportation train from Ravenswood, Virginia, to Parkersburg. On Sunday last, he stopped at a farm-house to bait the horses. He immediately found that the women of the house sympathized with Secession. The farmer was absent. Thinking he might learn some facts of importance, he assured the women that he was an officer from Wise's brigade. At first they distrusted him, but at length gave him their confidence, and treated him very kindly. He learned that the farmer would be at home at night. About ten o'clock he came. Free soon gained his confidence, and was told that a meeting had been arranged at a neigh-boring house for the purpose of planning an attack upon Union men. Free pretending to need a guide to show him the way to Wise's camp, the farmer, named Fred. Kizer, sent for some of his neighbors. Three of them came, one of whom was recommended as a guide. Free became satisfied from their conversation that they intended harm to Coleman and Smith, Union men, who had been influential, and at a concerted signal called his men around him, and declared himself an officer of the United States army. Instantly Kizer and his rebel friends were seized. The Lieutenant immediately ordered a march, and the next morning delivered his prisoners to Captain Stinch-comb, at Parkersburg, who sent him with three guards to Columbus. The names of the prisoners are Frederick Kizer, David H. Young,  John W. Wigal, and John H. Lockwood.--Cincinnati Gazette, July 17.
In the Senate of the United States, John C. Breckenridge, of Kentucky, in an elaborate speech, opposed the resolution approving the acts of the President in suppressing the Southern rebellion. He rehearsed the old arguments against the right of the Government to put down rebellion, and in the course of his remarks, took occasion to deny positively that he had ever telegraphed to Jeff. Davis that President Lincoln's Congress would not be allowed to meet in Washington on the 4th of July, or that Kentucky would furnish 7,000 armed men for the rebel army.--(Doc. 94.)
It is doubtful, says the National Intelligencer of this date, whether, since the days of Peter the Hermit, the world has seen such an uprising, at the bidding of a sentiment, as this country has exhibited in the last ninety days. Perhaps the magnitude of the effort is best appreciated by observing what has been done by single States of the Confederacy. And to illustrate this, we need not even adduce the exertions of sovereignties dating back to Revolutionary days, as New York, Pennsylvania and Massachusetts. Younger members of the Confederacy, States that half a century since had no existence, contribute singly no inconsiderable army to the assembling forces of the Union. Let us instance one of these, which recent events in Western Virginia have brought favorably and prominently forward--Indiana, forty-five years ago a frontier Territory, where the red man still contended with the white pioneer. Indiana has equipped, and is equipping for the General Government, a force such as has decided ere now the fate of a nation--twenty-three regiments, a volunteer army of more than twenty thousand infantry and twelve hundred cavalry; and these she has not only uniformed and accoutred, but partially armed with the improved rifle of the day, meanwhile at her own expense. This is no isolated example. Others have done as well. If the power of a sentiment is to be estimated by the deeds it prompts, how strong must be the love of the Union in the hearts of its citizens!
The Federal army in Virginia to-day took up the line of march for Fairfax and Manassas. The force standing to-day is fully 50,000 strong, the number reaching by actual count about 53,000. These are about 3,000 regular infantry, cavalry, and artillery, and 50,000 volunteers. The two Rhode Island, the 71st New York, and the 2d New Hampshire, comprising Colonel Burnside's brigade, left Washington at 4 o'clock this afternoon, and struck the road for Fairfax Court House. The 27th New York went over at 5 o'clock, and also took the Fairfax route. As soon as these regiments came together and passed the encampment, the soldiers cheered lustily and shouted congratulations to each other that they were fairly on the road to the rebel capital. The Dekalb Regiment passed over the bridge and went into Camp Runyon.--(Doc. 97.)