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 plained of have disappeared long ago; why should he go on taking the stuff when he is quite well? And by the bye where did he get it made up? At Sayce's? I never send any one there; the old man is getting careless. Suppose you come with me to the chemist's; I should like to have some talk with him."

We walked together to the shop. Old Sayce knew Dr. Haberden, and was quite ready to give any information.

"You have been sending that in to Mr. Leicester for some weeks, I think, on my prescription," said the doctor, giving the old man a pencilled scrap of paper.

The chemist put on his great spectacles with trembling uncertainty, and held up the paper with a shaking hand.

"Oh, yes," he said, "I have very little of it left; it is rather an uncommon drug, and I have had it in stock some time. I must get in some more, if Mr. Leicester goes on with it."

"Kindly let me have a look at the stuff," said Haberden; and the chemist gave him a glass bottle. He took out the stopper and smelt the contents, and looked strangely at the old man.

"Where did you get this?" he said, "and what is it? For one thing, Mr. Sayce, it is not what I prescribed. Yes, yes, I see the label is right enough, but I tell you this is not the drug."

"I have had it a long time," said the old man, in feeble terror. "I got it from Burbage's in the usual way. It is not prescribed often, and I have had it on the shelf for some years. You see there is very little left."