"I have sent Gregory up to see the man. If he is what I hope he may be, Gregory will bring him here—I have given him the password."

"What difference will it make?" asked Milsom. "You are on to a big fortune, anyway."

"Fortune?" The eyes of Dr. van Heerden sparkled and he seemed to expand at the splendour of the vision which was conjured to his eyes.

"No fortune which mortal man has ever possessed will be comparable. All the riches of all the world will lie at my feet. Milliards upon milliards——"

"In fact, a lot of money," said the practical Dr. Milsom. "'Umph! I don't quite see how you are going to do it. You haven't taken me very much into your confidence, van Heerden."

"You know everything."

Milsom chuckled.

"I know that in the safe of my office you have a thousand sealed envelopes addressed, as I gather, to all the scallywags of the world, and I know pretty well what you intend doing; but how do you benefit? And how do I benefit?"

Van Heerden had recovered his self-possession.

"You have already benefited," he said shortly, "more than you could have hoped."