Captain Lestrange caught her by the arm as she leaned too far, and held her firmly till she recovered her balance. "That was rather dangerous," he said, releasing her gently. "I could not stand by and see it drown," said Elsa, shivering, and she turned her eyes back across the river, to where in the distance the white buildings of Greenwich stood almost in the water in the pearl haze. Who shall say what Elsa's thoughts were as she leaned against the railing, white hand against white rose cheek, and watched the tide which was sweeping them towards the sea? Did she realise that another current was bearing her whither she knew not, was hurrying her little barque, afloat for the first time, towards a surging line of breakers where white sails of maiden innocence and faith and purity might perchance go under? Did she with those wonderful melancholy eyes look across her youth and dimly foresee, what all those who have missed love learn in middle life, how chill is the deepening shadow in which a loveless life stands? Did she dimly see this, and shrink from the loveless marriage before her, which would close the door against love for ever? Did she in her great ignorance mistake the jewelled earthen cup of passion for the wine of love which should have brimmed it? Did she think to allay the thirst of the soul at the dazzling empty cup which was so urgently proffered to her? Who shall say what Elsa's thoughts were as the river widened to the sea. * * * * * They were coming back at last, beating up slowly, slowly against the tide towards London, lying low and dim against an agony of sunset. To Mary it had been an afternoon of slow torture. Ought she to speak to Elsa? "After the Speaker's Stairs" the telegram had said. Then Elsa meant to join Lord Francis on her return _this evening_. Ought not she, Mary, to go to Elsa now, where she sat apart watching the sunset, and implore her to go home? Ought she not to tell her that Lord Francis was an evil man, who would bring great misery upon her? Ought she not to show her that she was steeping her young soul in sin, ruining herself upon the threshold of life? Something whispered urgently to Mary that she ought at least to try to hold Elsa back from the precipice, whispered urgently that perhaps Elsa, friendless as she was, might listen to her even at the eleventh hour. And Elsa knew she knew. Was it Mary's soul--dwarfed and starved in the suffocating bandages of her straitened life and narrow religion--which was feebly stirring in its shroud, was striving to speak? Mary clenched her little blue-veined hands.