lady, even though I disregarded them, and I kept a keen eye upon
my two companions. Ferguson appeared to be a morose and silent
man, but I could see from the little that he said that he was at
least a fellow-countryman.

"Colonel Lysander Stark stopped at last before a low door, which
he unlocked. Within was a small, square room, in which the three
of us could hardly get at one time. Ferguson remained outside,
and the colonel ushered me in.

"'We are now,' said he, 'actually within the hydraulic press, and
it would be a particularly unpleasant thing for us if anyone were
to turn it on. The ceiling of this small chamber is really the
end of the descending piston, and it comes down with the force of
many tons upon this metal floor. There are small lateral columns
of water outside which receive the force, and which transmit and
multiply it in the manner which is familiar to you. The machine
goes readily enough, but there is some stiffness in the working
of it, and it has lost a little of its force. Perhaps you will
have the goodness to look it over and to show us how we can set
it right.'

"I took the lamp from him, and I examined the machine very
thoroughly. It was indeed a gigantic one, and capable of
exercising enormous pressure. When I passed outside, however, and
pressed down the levers which controlled it, I knew at once by
the whishing sound that there was a slight leakage, which allowed
a regurgitation of water through one of the side cylinders. An
examination showed that one of the india-rubber bands which was
round the head of a driving-rod had shrunk so as not quite to