l Ict'cr in ilie I'e.iple's Advocate( Ã¯ork. Pa..) states that a duel was iought a few days ago in liopeweli, York county,ljetveen Mr. Jesse Gilbert, of Hnrtford county. nnd Mr. W. B. Blair. of Ohio. The dispute arÃ³se in an argument alioiit the Oregon question! They foughl with rifles nt sixty paces. Ai'er the firai fue. neiiher ofihe paJtics Leing hurt, the difficuhj waa adjuslcd ly the seconds.