'It's a big thing,' Purvis said, 'and will require all my strength;' and he announced his intention of remaining hidden in Rosario for a few weeks while he rested completely. But his chronic inability to sleep made rest impossible. He was calculating and adding up figures during the watches of the night, and his strange, light-coloured eyes, with the constant tear in them, became paler in colour and more suggestive of bad nerves. He began to find his calculations difficult to balance, and he even made some mistakes in his long rows of figures. The thing worried him and he began to wonder if his head were going. He had always overcome difficulties and had fought dangers with an absolute belief in his own success. He was unscrupulous and cunning, but he had never been beaten yet. It was horrible that sleep was the thing that he could not command; but, alas! the exercise of will-power is not the force by which sleep can be induced, and a placid or submissive mind was unknown to Purvis. His wife watched him anxiously. She would go for long walks with him in the early dawn or after it was dark, hoping that the fresh air and the cooler weather might bring some sort of repose to the wide-open pale eyes; but no sleep came, and Purvis took to swallowing more tabloids, and setting out his rows of figures in a nervous way, while his hand trembled and his plaintive voice became irritable, and his eyes watered more than they were wont to do.

He had money in hand, and it was some sort of comfort to his wife to be able to purchase for him the nourishing food which he required. She had often been in sore straits for money herself, but she believed, with pathetic conviction, that a woman can do with fewer comforts than a man can, and she had never felt deprivations for herself so much as she would have felt them for her husband. She cooked tempting dishes for him, and enjoyed his companionship, and asked no questions. She even allowed herself the purchase of a few new clothes now that money was plentiful again, and these days, even with the anxiety of her husband's ill-health hanging over her, were not by any means the unhappiest of her life.

'I shan't be able to pull this business through,' said Purvis one night, 'unless I sleep, and I can't live unless I succeed with it.'

He made his wife write innumerable letters for him in her own handwriting, and signed with an entirely new name. But it was difficult to transact these business affairs through the medium of another person, and even his meek wife might some day ask questions!

If only he could pull himself together and get a firmer grasp of things than he had at present! The commercial instinct was strong within him, and he had a genius for figures, but insomnia and the state of his nerves seemed to have deprived him of half his powers. He envied his wife her gentle breathing and her deep sleep; and he would often wake her in the night when he was most restless, and demand something at her hands—a very weak cup of tea, or a little milk and hot water—in order to hear the restoring sound of a human voice.

Lately, however, he had purchased a new sort of tabloid which he used sparingly, according to the chemist's directions, but at which he often looked longingly, believing that a little sleep lay within the tiny glass bottle.

He had lain awake for hours this night, noting the ticking of his watch, counting the hours as they struck on the neighbouring clock, falling sometimes into an uneasy slumber which lasted only a few minutes, and then waking at the sound of his own voice calling aloud in his sleep. He tried every plan and contrivance, however childish, by which men have sometimes courted slumber.

He lay in bed very still to-night, his wide-staring eyes looking into the darkness. He heard every hour as it struck, and his active brain refused to be quiet for a moment. Difficult things looked gigantic in the darkness, and everything upon which his thoughts dwelt became hopelessly exaggerated in his mind. Brandy and other stimulants had never been a temptation to him; his life had too often depended upon his wits for him to risk a muddled brain. But he still believed in tabloids; and as the day dawned, and light crept through the window, he looked longingly at the little glass vial lying on the dressing-table. It was three o'clock, and if only he could get a couple of hours' deep rest before the noise of the city began, he might yet be able to pull himself together and arrange his affairs.

He rose from the bed and went with unfaltering steps to the dressing-table and shook the tiny discs into the palm of his hand; and then he counted them deliberately.

'It's kill or cure!' he said, with that queer courage which never deserted him, even if it were based entirely upon self-seeking and self-interest. He threw his head back with the characteristic action with which he always swallowed his medicine, and went back to bed again.