...ction, and judging, from the discharges of musketry becoming frequent, that something serious was intended, I hastened in the direction indicated by the fire, and soon arrived upon the ground, on the Williamsburgh road, about three quarters of a mile in front of the Seven Pines, where I found Gen. Casey, who had placed the One Hundredth New-York, Col. Brown, on the left of that road, behind a field of large t...