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looked preoccupied with disturbing speculations not connected with his sport. The man had a secrecy bug. The invention, Barney thought, had turned out to be bigger than the inventor. McAllen was afraid of the Tube, and in the forefront of his reflections must be the inescapable fact that the secret of the McAllen Tube could no longer be kept without Barney Chard’s co-operation. Barney had evidence of its existence, and didn’t really need the evidence. A few hints dropped here and there would have made McAllen’s twelve years of elaborate precaution quite meaningless.
Ergo, McAllen must be pondering now, how could one persuade Mr. Chard to remain silent?
But there was a second consideration Barney had planted in the old scientist’s mind. Mr. Chard, that knowledgeable man of the world, exuded not at all by chance the impression of great quantities of available cash. His manner, the conservatively tailored business suit, the priceless chip of a platinum watch . . . and McAllen needed cash badly. He’d been fairly wealthy himself at one time; but since he had refrained from exploiting the Tube’s commercial possibilities, his continuing work with it was exhausting his capital. At least that could be assumed to be the reason for McAllen’s impoverishment, which was a matter Barney had ­established. In months the old man would be living on beans.
Ergo again, McAllen’s thoughts must be running, how might one not merely coax Mr. Chard into silence, but actually get him to come through with some e