_May 12_.--There was part of the late battle at Chancellorsville, (second Fredericksburgh,) a little over a week ago, Saturday, Saturday night and Sunday, under Gen. Joe Hooker, I would like to give just a glimpse of--(a moment's look in a terrible storm at sea--of which a few suggestions are enough, and full details impossible.) The fighting had been very hot during the day, and after an intermission the latter part, was resumed at night, and kept up with furious energy till 3 o'clock in the morning. That afternoon (Saturday) an attack sudden and strong by Stonewall Jackson had gain'd a great advantage to the southern army, and broken our lines, entering us like a wedge, and leaving things in that position at dark. But Hooker at 11 at night made a desperate push, drove the secesh forces back, restored his original lines, and resumed his plans. This night scrimmage was very exciting, and afforded countless strange and fearful pictures. The fighting had been general both at Chancellorsville and northeast at Fredericksburgh. (We hear of some poor fighting, episodes, skedaddling on our part. I think not of it. I think of the fierce bravery, the general rule.) One corps, the 6th, Sedgewick's, fights four dashing and bloody battles in thirty-six hours, retreating in great jeopardy, losing largely but maintaining itself, fighting with the sternest desperation under all circumstances, getting over the Rappahannock only by the skin of its teeth, yet getting over. It lost many, many brave men, yet it took vengeance, ample vengeance.