"You take him, Lester," he said, as I sat down beside him. "I'm worn out."

Quivering with apprehension, I arose. It was the first time I had been given the center of the stage in so important a case. Here was my opportunity! Suppose my theory should break down, after all!

"Mr. Rogers," I began, "you've been having some trouble with your eyes, haven't you?"

He looked at me in surprise.

"Why, yes, a little," he said. "Nothing to amount to anything. How did you know?"

My confidence had come back again. I was on the right track, then!

"I did not know," I said, smiling for the first time since I had entered the room. "But I suspected. I have here a number of pieces of cloth of different colors. I should like you to pick out the one that most nearly approximates the color of the gown your visitor wore yesterday afternoon."

I handed him the bundle of samples, and as I did so, I saw the district attorney lean forward over his desk with attentive face. The witness looked through the samples slowly, while I watched him with feverish eagerness. Mr. Royce had caught an inkling of my meaning and was watching him, too.

"There's nothing here," said Rogers, at last, "which seems quite the shade. But this is very near it."

He held up one of the pieces. With leaping heart, I heard the gasp of astonishment which ran around the room. The jurymen were leaning forward in their chairs.