As soon as his own was filled he trundled it up another series of planks to the roadway. Along this the continuous stream of sweating barrow-pushers led him to the end of the road. Here, under the direction of overseers, the loads were dumped into the virgin swamp. It looked to Bill as though the black water would swallow up all the mud they could carry and more, but before many trips had been completed, he could plainly make out the progress of the roadbed.