At noon we took our ease in a hollow in the midst of a thicket. While we were resting we heard far to our rear a distant sound that resembled the discharge of artillery. We learned afterward that the sound came from Mechanicsville, occupied this day by the advance of McClellan's right. About two o'clock we again set out. We climbed a hill from which we could see over a considerable stretch of country. The field in front of us was large; it would require a long detour to avoid the open space. Still, we were not pressed for time, and I was determined to be prudent. The only question was whether we should flank the field at the right or at the left. From our point of observation, it seemed to me that the field in front stretched sufficiently far in the north to reach the Hanover road; if this were true our only course was by the left. To be as nearly sure as possible, I sent Jones up a tree. I regretted very much that I had not brought a good field-glass, and wondered why General Morrell had not thought of it. Jones remained in the tree a long time; I had forbidden him speaking, lest the sound of his voice should reach the ear of some unseen enemy. When he came down he said that the road did go through the field and that there were men in the road. I now climbed the tree in my turn, and saw very distinctly, not more than half a mile away, a small body of men in the road. They seemed to be infantry and to be stationary; but while I was looking they began to move in the direction of Hanover Court-House. There were bushes on the sides of the road where they were; soon they passed beyond the bushes, and I could see that the men were mounted. I watched them until they were lost to sight where the road entered the woods beyond. I had counted eleven; I supposed there were ten men under command of an officer. It was now clear that we must flank the big field on its left. We acted with great caution. The fence stretched far beyond the corner of the field; we let down the fence, led our horses in, then put up the gap, and rode into the woods on the edge of the field. In some places the undergrowth was low, and we feared that our heads might be seen above our horses; in such places we dismounted. We passed at a distance one or two small houses--not dwellings, we thought, but field barns or cribs. At length we reached the western side of the field; we had gained greatly in position, though we were but little nearer to Hanover.