The United States gunboat Cimerone, was launched at Bordentown, N. J., this day. She was built by Capt. D. S. Mershon.--N. Y. Tribune.
The United States Senate confirmed the following nominations for brigadier-generals of volunteers: Major William F. Barry, chief of artillery, attached to Gen. McClellan's staff; Willis A. Gorman of Minnesota; Col. Schuyler Hamilton; Thomas L. Price, member of Congress from Missouri; Major James N. Palmer, Fifth cavalry; Lieut.-Col. Wm. H. Emory, Sixth cavalry; Major Andrew J. Smith, Fifth cavalry; Marcena L. Patrick of New York; Isaac F. Quinby of New York; Orris S. Ferry of Connecticut; Hiram G. Berry of Maine. The following brigade-surgeons, all of Pennsylvania, were confirmed: James D. Shawbridge, R. B. McKay, George L. Kemble, J. H. Taylor, George L. Pancoast, C. F.  H. Campbell, F. H. Gross, Washington J. Dufee.--A petition was presented from citizens of New York, asking Congress to stop the agitation of the slavery question, and attend to the restoration of the Union.