"You have placed this money somewhere?"--Doctor James's voice was toiling like a siren's to conjure the secret from the man's failing intelligence--"Is it in this room?" He thought he saw a fluttering assent in the dimming eyes. The pulse under his fingers was as fine and small as a silk thread. There arose in Doctor James's brain and heart the instincts of his other profession. Promptly, as he acted in everything, he decided to learn the whereabouts of this money, and at the calculated and certain cost of a human life. Drawing from his pocket a little pad of prescription blanks, he scribbled upon one of them a formula suited, according to the best practice, to the needs of the sufferer. Going to the door of the inner room, he softly called the old woman, gave her the prescription, and bade her take it to some drug store and fetch the medicine. When she had gone, muttering to herself, the doctor stepped to the bedside of the lady. She still slept soundly; her pulse was a little stronger; her forehead was cool, save where the inflammation of the bruise extended, and a slight moisture covered it. Unless disturbed, she would yet sleep for hours. He found the key in the door, and locked it after him when he returned. Doctor James looked at his watch. He could call half an hour his own, since before that time the old woman could scarcely return from her mission. Then he sought and found water in a pitcher and a glass tumbler. Opening his medicine case he took out the vial containing the nitroglycerine--"the oil," as his brethren of the brace-and-bit term it. One drop of the faint yellow, thickish liquid he let fall in the tumbler. He took out his silver hypodermic syringe case, and screwed the needle into its place, Carefully measuring each modicum of water in the graduated glass barrel of the syringe, he diluted the one drop with nearly half a tumbler of water. Two hours earlier that night Doctor James had, with that syringe, injected the undiluted liquid into a hole drilled in the lock of a safe, and had destroyed, with one dull explosion, the machinery that controlled the movement of the bolts. He now purposed, with the same means, to shiver the prime machinery of a human being--to rend its heart--and each shock was for the sake of the money to follow. The same means, but in a different guise. Whereas, that was the giant in its rude, primary dynamic strength, this was the courtier, whose no less deadly arms were concealed by velvet and lace. For the liquid in the tumbler and in the syringe that the physician carefully filled was now a solution of glonoin, the most powerful heart stimulant known to medical science. Two ounces had riven the solid door of the iron safe; with one fiftieth part of a minim he was now about to still forever the intricate mechanism of a human life.