and manufactures, fibres, food-products and drugs, my collection is certainly unique."
"And you have found your collection useful in your work?" I asked.
"Constantly. Over and over again I have obtained, by reference to my specimens, the most unexpected evidence, and the longer I practise, the more I become convinced that the microscope is the sheet-anchor of the medical jurist."
"By the way," I said, "you spoke of sending a telegram to Belfield. Did you send it?"
"Yes. I asked him to come to see me to-night at half-past eight, and, if possible, bring his wife with him. I want to get to the bottom of that handkerchief mystery."
"But do you think he will tell you the truth about it?"
"That is impossible to judge; he will be a fool if he does not. But I think he will; he has a godly fear of me and my methods."
As soon as our dinner was finished and cleared away, Thorndyke produced the "collecting-box" from his pocket, and began to sort out the day's "catch," giving explicit directions to Polton for the disposal of each specimen. The hairs and small feathers were to be mounted as microscopic objects, while the larger feathers were to be placed, each in its separate labelled envelope, in its appropriate box. While these directions were
