“What could it be but a scourge or flexible whip of some sort?”

“Have you examined the marks?” I asked.

“I have seen them. So has the doctor.”

“But I have examined them very carefully with a lens. They have peculiarities.”

“What are they, Mr. Holmes?”

I stepped to my bureau and brought out an enlarged photograph. “This is my method in such cases,” I explained.

“You certainly do things thoroughly, Mr. Holmes.”

“I should hardly be what I am if I did not. Now let us consider this weal which extends round the right shoulder. Do you observe nothing remarkable?”