And, as the colonel spoke, Chet gave a shudder, fell over on his side and, with a long sigh, lay very still.

CHAPTER XVI

THE COLONEL WONDERS

"What did that, Colonel? What devilish thing did that?" and with a trembling finger Jack Young pointed to the body of the dead dog on the floor of the detective's room. "What killed the poor brute?"

"Unless I'm very much mistaken this did," was the answer in a low voice, and the colonel, with the watch still wrapped carefully in the wad of tissue paper, placed it on the table.

"That ticker killed the dog? Nonsense! He didn't swallow it! He had it in his mouth, but he got it out! That couldn't have killed him!"

"I think it did though, Jack, just as it killed Shere Ali and just as—"

"Do you mean—that's what killed Mrs. Darcy—that watch?"

"I don't know yet, Jack."

"But how could it? How could—"