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--"

The visitor ceased his questions to watch the colonel, who had gone to
a closet and taken out a pair of rubber gloves. Putting them on, he
took the watch from its tissue paper wrappings, and then, holding it
under the gleaming light on his table, he gave a twist to the case,
pressed on a certain point in the rim with the end of his lead pencil
and a tiny needle shot out into view.

"Look!" said the colonel to Jack Young.

"Good Lord! An infernal machine in a watch!"

"Not exactly an infernal machine, but a poisoned needle which only
required pressure on the rim of the case to shoot it out into the hand,
or whatever part of a person or animal was near it. Poor Chet, gnawing
the watch which he was playing with--worrying it as he would a
bone--must have bitten on the right place. The needle shot out,
pierced his tongue or lips and--the deadly poison did the rest!"

"But, Colonel--this--this is the watch Mrs. Darcy had in her hand when
she was found dead!"

"Yes," was the cool response.

"And its the same one Shere Ali had in his hand when he was found dead!"

"Yes."

"But both of them had their heads smashed in!"

"Yes, Jack."

"But, Great Scott, Colonel! the watch can't do that as well as poison
to death! It's out of the question!"

"Of course it is. I didn't claim the watch did anything like that. I
don't even claim the poison-needle watch killed Mrs. Darcy or Shere
Ali. But that it did kill Chet I'm certain."

"I believe you're right there, Colonel Ashley. Poor little dog!" and
Jack, who loved animals, looked at the limp body.

"I know I'm right, Jack. If I had seen, in time, that he had the watch
I'd have tried to get it away from him. But maybe it will turn out for
the best. In the interests of justice--"

"Do you think this will help in solving the mystery?"

"It may."

"But I thought you said the poison-needle watch might not have killed
Mrs. Darcy?"

"I'm not saying anything, Jack. It might, and might not."

"But the blow on her head--the stab wound in her side--?"

"Both could have been inflicted after the poison watch killed her--if
it did. Mind you, Jack, I'm mak