"I've something to show you."
"Well," I gasped, "what do you know about that?"
Very early that morning Craig had got up, leaving me snoring.
Cases never wearied him. He thrived on excitement.
He had gone over to the laboratory and set to work in a corner
over another of those peculiar boxes, exactly like that which he
had already left in our rooms.
In the face of each of these boxes, as I have said, were two
square holes. The sides of these holes converged inward into the
box, in the manner of a four sided pyramid, ending at the apex in
a little circle of black, perhaps half an inch across.
Satisfied at last with his work, Craig had stood back from the
weird apparatus and shouted my name. He had enjoyed my surprise to
the fullest extent, then had asked me to join him.
Half an hour afterward I walked into the laboratory, feeling a
little sheepish over the practical joke, but none the less curious
to find out all about it.
"What is it?" I asked indicating the apparatus.
"A vocaphone," he replied, still laughing, "the loud speaking
telephone, the little box that hears and talks. It talks right out
in meeting, too--no transmitter to hold to the mouth, no receiver
to hold to the ear. You see, this transmitter is so sensitive that
it picks up even a whisper, and the receiver is placed back of
those two megaphone-like pyramids.
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