Nevertheless, Cuthbert could not refrain from keeping his eyes about, in the hope that by a lucky chance he might discover the one who laughed; and just as he was about to turn back to the camp of his friends he did catch a sound that immediately fastened his attention, only instead of merriment, it was rather a lugubrious little song, sung half under the breath--a song that possibly had the power to bring before the mind of the singer the face of the dear mother who had taught her to sing it, a song that affected even Cuthbert as he stood with bowed head and harkened.