soot were slight scratches indicating where it struck and
prevented the turning of the lock. He filed the key, trying it
again and again. Finally he finished, and opened the door.
Beckoning Long Sin, he entered our rooms.

As they stood there, Wu Fang gazed about our living-room, keenly.
He was evidently considering where to place something, for, one
after another, he picked up several articles on the desk and
examined them. Each time that he laid one down he shook his head.

Finally his eye rested on the telephone. It seemed to suggest an
idea to him and he crossed over to it. Carefully holding down the
receiver on the hook, he unscrewed the case which holds the
diaphragm, while with his clever fingers he held the rest of the
instrument intact. Then he removed from his pocket the vial which
the coolie had given him and placed its contents on the diaphragm
itself. Quickly now he replaced the receiver, and, having finished
their work, Long Sin and Wu Fang stealthily crept out.

A second time, as we approached our apartment after the visit to
Elaine, we were too excited to notice the limousine in which were
Wu and Long Sin. But no sooner had we entered than Long Sin left
the car with a final word of instruction from his master.

Up-stairs, in the apartment, Kennedy began hurriedly to pack, and
I helped him as well as I could. We were in the midst of it when
the telephone rang and I answered it.

"Hello!" I called.