"I have never seen you before, to my knowledge."

"Perhaps you will explain how you came by this photograph?"

"That is my business!" said Gold sternly.

"Oh, is it?" retorted Jim with fire. "We will see about that." I think it annoyed him, as it certainly did me, to detect in the other's glance and tone a subtle meaning--a covert understanding. "If you do not explain, I'll--I will call in the police, my man."

But here the Colonel interfered. He told me afterwards that he felt some sympathy for Gold. He silenced Jim, and, telling the other that he should hear from him again, he led us downstairs. I noticed that, as we passed into the street, he slipped his arm through his son's, and I have no doubt he managed to convey to the young fellow as plainly as by words that his faith was unshaken.

Very naturally, however, Jim was not satisfied with this or with the present position of things; which was certainly puzzling. "But, look here!" he said, standing still in the middle of the pavement, "what is to be done, sir? That fellow believes or pretends to believe, though he will not say a word, that I have used him to do my dirty work. And I have not! Then why the deuce does he parade my photograph? Do you think--by George! I believe I have got it--do you think it is a case of blackmail?"

"No," the Colonel said with decision, "it cannot be. We came upon the photograph by the purest accident. It was not sent to us, or used against you. No! But see here!" The Colonel in his turn stopped in the middle of the pavement and struck the latter with his stick. He had got his idea, and his eyes sparkled.

"Well?" we said.

"Suppose some other fellow employed Gold to pass the examination, and, having this very fear--of being blackmailed--in his mind, got a photograph of a friend tolerably like himself? And sent it up instead of his own? What then?"

"What then? Precisely!" I said. And we all nodded at one another like so many Chinese mandarins, and the Colonel looked proudly at his son, as though saying, "Now what do you think of your father, my boy?"