The woman withdrew her shoulder from the wall, gathered her cloak round her, and resumed her way along the edge of the tow-path, going south. She walked more slowly now, as if in thought or to give time. She walked as though she must, because of her inclination, make progress, but must not for some reason make too quick an advance.

Presently she stepped into the profound gloom under Welford Bridge, and in a few seconds emerged upon the other side. Here she made another pause.

Not a soul was in sight. She had met no one since taking the tow-path at Leeham. The night was perfectly still. She looked around at the bridge, and then moved rapidly along the path, as though wishing to get beyond the point at which she might attract the attention of any one looking over the parapet.

When about two hundred yards from the bridge she paused once more. Here was no building against which she could lean, but instead a sharply sloping bank surmounted by a wall. Opposite where she stood a large log of wood reclined against the slope. She crept over and leaned against the bank beside the log. In this position she would be perfectly invisible to any one looking over the parapet, or even passing along the tow-path carelessly. Here the horse-track was more than twice its ordinary width, and between the trodden part of the path and the bank spread a space of grass-grown waste of equal width.

Directly opposite to her stood Crawford's House, and a little further to the left Boland's Ait. She put her hollowed right hand behind her ear, leaned her head towards the islet, and listened intently. Not a sound. She closed her eyes and concentrated all her faculties in the one of hearing. The tranquillity of the cloudless night was unbroken by any murmur but the dull dead murmur that always hangs over the city, and is faintly perceptible even here.

Suddenly a soft gentle sound stole upon her ears, but not from the desired quarter. The voice of a woman singing reached her. She opened her eyes. A light burned now in the top room of Crawford's House.

The wayfarer on the tow-path could make nothing out, owing to the distance and to the light being behind the singer, save that a woman was standing at the open window and humming in a very low voice an old lullaby song. The light of the lamp came through the hair of the singer, and the listener saw that the colour of the hair was golden.

The watcher leaned back against the bank, closed her eyes, and put her hands over her ears. She remained so a considerable time. When she opened her eyes the light had been extinguished. She took her hands down from her ears--all was still once more.

She looked up and down the track carefully, and strained her ear to catch footfalls; but no one was in view, and no noise of feet broke the frozen monotony of the silence. Gathering her cloak around her, she left her resting-place, and, having gained the edge of the water, resumed her way at a rapid rate in a southerly direction until she got opposite the tail of Boland's Ait.

Here she reduced her pace, and kept on with her eyes fixed eagerly on the ground at her feet. She bent forward, and as low as she could. Apparently, she was looking for some mark.