An accident took place just as the last battery was crossing the bridge. The vertical motion of the rafts was such as to startle the horses, and some, from the dull reverberating noise produced by their tramp, coupled with the booming roll of the heavy wheels on the superstructure, became ungovernable, and six horses tumbled into the stream dragging with them a gun with its carriage and limber. As usual, the sappers lined the bridge with extended oars, and in the struggling of the horses, four of the men were swept into the current. Three of them were injured—two severely. These were privates John Piper and William Swann,[126] who were also nearly drowned. The latter was entangled with the horses in the water, and it was with great difficulty he succeeded in getting on the back of one of them, when he was picked up by the crew of a boat quickly manned for the purpose. Four of the horses were cleverly rescued by colour-sergeant William Jamieson and private Henry Collins, who dexterously cut the traces; but the two wheel-horses, borne down by the carriage, could not be saved. Privates Daniel Port, Henry Collins,[127] and Elias Garratt conducted themselves with intrepidity on the occasion by plunging from the bridge into the river to rescue the men and save the horses. After the operation the sappers bivouacked on the ground, and dined on the day’s ration taken with them from the camp. The bridge was afterwards dismantled, packed on the waggons, and then accompanied the troops to Staines. The company belonging to the Chobham force did not reach its tents till eight o’clock in the evening.