stands--I was dosed. You asked me to
watch, and I did watch. Up to midnight that lantern on top of the trunk
wasn't out of my sight fifteen minutes at a time."

"And then?" questioned Bart.

"I always go over to the crossing switch shanty about twelve o'clock to
eat my lunch. The old switchman lends me his night key. I put my lunch
in on the bench when I come on duty, and he always leaves the stove full
of splinters to warm up the coffee quick. When I let myself in at
midnight, the lantern here was right as a beacon--I particularly noticed
it."

"How long was it before you came out again?"

"Four hours afterwards--just a little while ago."

"Then you--fell asleep?" said Bart.

"Yes, I did, and no blame to me. I'm no skulker, as you well know. I
never did such a thing before in all my ten years of duty here. I was
doped."

"How do you know that?" asked Bart.

"I warmed up the coffee and had my lunch," narrated the watchman. "Then
I settled down for a ten minutes' comfortable smoke, as I always do. I
felt sort of sickish, right away. I had noticed that the coffee tasted
queer, but I fancied it might have been burned. Anyhow, half an hour ago
I seemed to come out of a stupor, my head fairly splitting, and my
stomach burning as though I'd taken poison. I thought of poison,
somehow, and more so than ever as I reached over to see if there was any
coffee left, for my throat was dry as a piece of pine board. There
wasn't, but at the bottom of the pail were two or three little sticky
brown dabs. I tasted the stuff. It was opium. I know, for I've used it
in sickness. I stumbled out to get the air. The minute I glanced over at
the express office I guessed it all out. It's a burglary, right and
proper, Stirling, and the fellows who did it knew I was on the watch,
got into the switch shanty, fixed the coffee and put me to sleep."

Bart rapidly turned over in his mind all that the watchman had
disclosed.

"See here," he said promptly, "how many keys are there to the switch
shanty?"

"Only one that I know anything of," responded McCarthy. "There can't be
many, or the old switchman wouldn't have to lend me his key."

"Lem Wacker subbed for him once, didn't he?" inquired Bart pointedly.

"Yes, for a day or two--say! you don't think--" began the watchman, with
a start of suspicion.

"I'm not thinking anything positive," interrupted Bart--"I am only
seeking information. When Wacker subbed for the old switchman, did he
h