Jbetter from fUfeArttty.Hi.aBR8T0WN, Mb t July 13.Editor Scuxmnah Republican : —This invasion has been of very, little profit to the Confederacy to far, buUnuhc humble opinion -oL your correspondent- ituny have been of the greatest importance. .Tis.very true Gent Lb® has not left Maryland yet, but, unless more is done in the next move, it would be well enough to move back Into Virginia. Now the awful battle has pjsssed aod we are qnietiy waitieg.perhaps, for atfbtkerTqhdlly as awful an^ destruciive.— We caujobk at these things calmly and say what wfe^ink. The army was in the finest conditionqyer known to meet the Federal army, and In twis and equipage thero was^nothiug wantiBfl^Every one felt sure of victory, if it were possible to meet the enemy, on anything like equal ground, and went ou to the tuna of battle in thi highest confidence. But for some reason or tfher the strength of the Southern army wasmurled against a position almost as impregnable as Vicksburg* or Gibralter, and wasted away as if a perfect infatuation had possessed our commander. Why could not the army bare been Withdrawn when the strength of she position was discovered ? -It is singular fact that Gen. lire’s usual sagaeity deserted him on this occasion at Gettysburg. Now, there