The following interesting letter from Gen. Herron to a gentleman in Dubuque, we find In the Tune*. It gives a detailed account the great victory lately achieved by our forces •t Prairie Grove, Arkansas.Hbadqcirter* 8p Drrtgtow, IAnuy of the Frontier, vCamp Praiiii Qrotb, December 15,186*2, )You have undoubtedly received ere thi pretty full particulars of the tight at tins place on Sunday last. I left Wilson’s Creek to help Blunt, as the rebels wvre pressing him hard, and had marched one hundred and ten miles in three days, will the entire baggage and Commissary train. This you will see at a glance was a irctncmluous mutter, but I told thu hoys theie was a tight on hand, and that we must gel there, or break a wheel. On ftumlay morning at three o'clock we reached Fayetteville, and after one hour's rest pushed on:General Blunt had kept up clt; tnmunication with mu until Saturuuy mgtil, ui winch time the enemy forced his pickets back, and by making a feint in front, withdrew his attention, and threw their whole force, 25,l»UU in between us. On the Saturday before 1 had sent all my cavalry, 3U0U in number, to reinforce Biuir., having nothing therefore with me but infantry and artillery. 1 nud necessarily to leave considerable behind to keep my line open, and keep u heavy guard on my train of 4U0 wagons, so that I had left but 4000 available men. A more beautiful morning, or a grander sunrise than that of L)c cumber 7lh, 1 never beheld. We had marched about seven miles southwest of Fayetteville, when musketry was heard in the distance, and in a few minutes the Arkansas cavahy came dashing back jn great disorder The enemy’s advance had attacked them. It took hal. an hour to get them rallied, and form a battery and two regiments of infantry for protection, when [ again commenced an advance. For four miles we fought their cavalry, dtiving them back to Illinois Creek, where I found their whole force strongly posted on a long ridge with magnificent positions for butteries. For one mile in front it was clear ground, and my road lay right in the center of their line. From a prisoner taken I learned that Hindman was on the ridge with his whole force, and intended 'o whip me out before Blunt could get up—in other woids, to take us one at a time. Tl e case looked tough, with Blunt ten miles away, and twenty-five thousand men between us, but I saw at a glance there Were ju-t two things that could be done—viz., tightthem without delav. and A i»narul am ft