this." He suddenly produced a small cardboard box, such as
chemists use for powders.

"Where did you find it?"

"In the wash-stand drawer in Mrs. Inglethorp's bedroom. It was
Number Six of my catalogue."

"But I suppose, as the last powder was taken two days ago, it is
not of much importance?"

"Probably not, but do you notice anything that strikes you as
peculiar about this box?"

I examined it closely.

"No, I can't say that I do."

"Look at the label."

I read the label carefully: " 'One powder to be taken at bedtime,
if required. Mrs. Inglethorp.' No, I see nothing unusual."

"Not the fact that there is no chemist's name?"

"Ah!" I exclaimed. "To be sure, that is odd!"

"Have you ever known a chemist to send out a box like that,
without his printed name?"