Sylvia gave her a quick glance. "I read somewhere--I don't know if it's true--that we are all given the ingredients of happiness, but the mixing is left to ourselves. Perhaps you and I haven't found the right mixture yet." "Ah!" said Mrs. Merston. "Perhaps not." "I'm going to have another try," said Sylvia, with sudden energy. "I wish you luck," said Mrs. Merston somewhat grimly. CHAPTER IV MIRAGE From the day of her visit to the Merstons Sylvia took up her old life again, and pursued all her old vocations with a vigour that seemed even more enthusiastic than of yore. Her ministrations to Guy had ceased to be of an arduous character, or indeed to occupy much of her time. It was mainly Burke who filled Kieff's place and looked after Guy generally with a quiet efficiency that never encouraged any indulgence. They seemed to be good friends, yet Sylvia often wondered with a dull ache at the heart if this were any more than seeming. There was so slight a show of intimacy between them, so little of that camaraderie generally so noticeable between dwellers in the wilderness. Sometimes she fancied she caught a mocking light in Guy's eyes when they looked at Burke. He was always perfectly docile under his management, but was he always genuine? She could not tell. His recovery amazed her. He seemed to possess an almost boundless store of vitality. He cast his weakness from him with careless jesting, laughing down all her fears. She knew well that he was not so strong as he would have had her believe, that he fought down his demon of suffering in solitude, that often he paid heavily for deeds of recklessness. But the fact remained that he had come back from the gates of death, and each day she marvelled anew.