It was too late. She looked up, kissed her hand gayly to her husband, and turned to obey. But her foot was already upon the treacherous gravel, and she slipped a little, recovered herself; then, startled, tried too suddenly to spring upon firmer ground, and slipped again. The gravel gave way more and more beneath her weight. She went sliding, sliding down, and, in an instant, had disappeared from the sight of the terrified group above.