"No more business to-day," said the sick man, wearily. "Take those papers back to Mr. Bray, and tell him to do the best he can with them. As for yourself, you will go at once to Dr. Whitaker, and give that bottle into his own hands. I suppose I may rely upon your fidelity and discretion in this matter, eh?"

"You may do that, sir, with perfect confidence," said Pod, with much earnestness.

"Yes, I think you are true and honest," said Kelvin, slowly, with his eyes fixed full on the boy's open face. Then, as Pod went out, he added to himself: "That letter of Whitaker's has instilled such a horrible suspicion into my mind, that I no longer know whom or what to believe."

Next morning. Pod smuggled another letter into the hands of his master. It was very brief, but very much to the purpose.

"My dear Kelvin,

"I must see you as quickly as possible, and in private. Your restoration to health, nay, your life itself, may depend on this. No one must know of my visit except Piper; and you must let me know through him when you can arrange to have me admitted to your room without any of your household being aware of my visit. Not a word to anyone. Burn this.

"Yours ever,

"C. W."

For fully half an hour Matthew Kelvin remained buried in thought after reading this letter. Then he said to Pod:

"Instead of Mr. Bray signing the letters this afternoon, you will bring them upstairs to be signed by me." At five o'clock, up came Pod with the letters. Kelvin was sitting up in his easy-chair by this time, and it struck Pod that he looked brighter and better than he had seen him look for some time past. When the letters were signed, and Pod was about to go, Kelvin put into his hand a sealed envelope. "Give this to Dr. Whitaker, and be sure that he has it to-night."