open and notorious that it amounts to a scandal."

We parted a moment later, Mrs. Sutphen and Miss McCann to go to
the settlement house, Craig and I to continue our investigations.

"First of all, Walter," he said as we swung aboard an uptown car,
"I want to stop at the laboratory."

In his den, which had been the scene of so many triumphs, Kennedy
began a hasty examination of the tablets, powdering one and
testing it with one chemical after another.

"What are they?" I asked at length when he seemed to have found
the right reaction which gave him the clue.

"Happy dust," he answered briefly.

"Happy dust?" I repeated, looking at him a moment in doubt as to
whether he was joking or serious. "What is that?"

"The Tenderloin name for heroin--a comparatively new derivative of
morphine. It is really morphine treated with acetic acid which
renders it more powerful than morphine alone."

"How do they take them? What's the effect?" I asked.

"The person who uses heroin usually powders the tablets and snuffs
the powder up the nose," he answered. "In a short time, perhaps
only two or three weeks, one can become a confirmed victim of
'happy dust.' And while one is under its influence he is morally,