in peculiar patterns to produce odd rhythmic sounds,
electrical apparatus of all sorts. Near Phillips was a plate some feet
square, of heavy metal, raised from the floor on poles of a different
substance. About the ceiling were studs thickly set of the same sort
of metal as was the big plate.

One of the sleuths tapped his forehead, pointing to Lambert as the
latter nervously lighted a cigarette.

The newcomer reported to Phillips. He held in his hand two or three
sheets of paper on which something was written.

"The only other person here is a deaf mute," said the sleuth to
Phillips, his superior. "I've got his story. He writes that he takes
care of things, cooks their meals and so on. And he writes further
that he thinks the woman and this guy Lambert were in love with each
other. He has no idea where she has gone to. Here, you read it."

Phillips took the sheets and continued: "'Yesterday morning about ten
o'clock I was passing the door of the laboratory on my way to make up
Professor Lambert's bed. Suddenly I noticed a queer, shimmering,
greenish-blue light streaming down from the walls and ceiling of the
laboratory. I was right outside the place and though I cannot hear
anything, I was knocked down and I twisted and wriggled around like a
snake. It felt like something with a thousand little paws but with
great strength was pushing me every way. When there was a lull, and
the light had stopped for a few moments, I staggered to my feet and
ran madly for my own quarters, scared out of my head. As I went by the
kitchen, I saw Miss Crawford at the sink there, filling some vases and
arranging flowers as she usually did every morning.

"'If she called to me, I did not hear her or notice her lips moving. I
believe she came to the door.

"'I was going to quit, when I recovered myself, angry at what had
occurred; but then, I began to feel ashamed for being such a baby, for
Professor Lambert has been very good to me. About fifteen minutes
after I went to my room, I was able to return to the kitchen. Miss
Crawford was not there, though the flowers and vases were. Then, as I
started to work, still a little alarmed, Professor Lambert came
rushing into the kitchen, an expression of terror on his face. His
mouth was open, and I think he was calling. He then ran out, back to
the laboratory, and I have not seen Miss Madge since. Professor
Lambert has been almost continuously in the work-room since then,
and--I kept away from