By degrees as the river narrowed, and the high sandbanks fell to level ground thickly grown with trees, the sounds of the forest could be heard. It echoed like a hall. There were sudden cries; and then long spaces of silence, such as there are in a cathedral when a boy's voice has ceased and the echo of it still seems to haunt about the remote places of the roof. Once Mr. Flushing rose and spoke to a sailor, and even announced that some time after luncheon the steamer would stop, and they could walk a little way through the forest.