"He's quiet to-night," he said, "that fellow is too full of himself for my liking. Earlier in the evening before I arrived he pulled a gun on Schultz. He's too full of gunplay that fellow--excuse the idiom, but I was in the same tailor's shop at Portland Gaol as Ned Garrand, the Yankee bank-smasher." Van Heerden made a gesture of impatience. "About old Heyler," Milsom went on, "I know you think he's dangerous, so I've kept him here. There's a room where he can sleep, and he can take all the exercise he wants at night. But the old fool is restless--he's been asking me what is the object of his work." "He's difficult. Twice he has nearly betrayed me. As I told you in the car, I gave him some experimental work to do and he brought the result to me--that was the sample which fell into Beale's hands." "Mr. Beale is certainly a danger," said Milsom thoughtfully. Van Heerden made a move toward the laboratory, but Milsom's big hand detained him. "One minute, van Heerden," he said, "whilst you're here you'd better decide--when do we start dismantling? I've got to find some excuse to send these fellows away." Van Heerden thought. "In two days," he said, "that will give you time to clear. You can send the men--well, send them to Scotland, some out-of-the-way place where news doesn't travel. Tell them we're opening a new factory, and put them up at the local hotel." Milsom inclined his head. "That sounds easy," he said, "I could take charge of them until the time came to skip. One can get a boat at Greenock." "I shall miss you," said van Heerden frankly, "you were necessary to me, Milsom. You're the driving force I wanted, and the only man of my class and calibre I can ever expect to meet, one who would go into this business with me." They had reached the big vault and van Heerden stood regarding the scene of mental activity with something approaching complacency. "There is a billion in process of creation," he said. "I could never think in more than six figures," said Milsom, "and it is only under your cheering influence that I can stretch to seven. I am going to live in the Argentine, van Heerden. A house on a hill----" The other shivered, but Milsom went on. "A gorgeous palace of a house, alive with servants. A string band, a perfectly equipped laboratory where I can indulge my passion for research, a high-powered auto, wine of the rarest--ah!" Van Heerden looked at his companion curiously. "That appeals to you, does it? For me, the control of finance. Endless schemes of fortune; endless smashings of rivals, railways, ships, great industries juggled and shuffled--that is the life I plan." "Fine!" said the other laconically. They walked to a bench and the worker looked up and took off his mask. He was an old man, and grinned toothlessly at van Heerden. "Good evening, Signor Doctor," he said in Italian. "Science is long and life is short, signor."