much talk. But Alden held his tongue.

A look of appreciation, of liking, came upon the Master's face. It was
just the suspicion of a look, for in all this strange man's life no
great show of emotion ever had been permitted to mirror itself upon
his countenance. But still, the look was there. He half opened his
lips, as if to speak, then closed them again, and--like Alden--fell to
studying the control apparatus.

All was beautifully arranged, all nicely calculated for instant
use. Not here, as in small machines, could the pilot handle his own
engines, tilt his planes, or manipulate his rudders by hand. That
would have been as absurd to think of, as for the steersman of an
ocean liner to work without the intervention of steam steering-gear.

No, these controls actuated various motors that, using current from
the dynamos, produced the desired action with smooth and certain
promptness. A turn of the wrist, perhaps no more than the touch of
a finger, and the whole vast creation would respond as easily as a
child's toy can be manipulated by a strong man's hand.

Hooded dials, brightly lighted push-buttons, a telephone headpiece and
receiver combined, and switches all lay in easy reach. Here was the
tachometer, that would give to a fraction the revolutions of each
screw per minute; here the altimeter, to indicate height; here the
air-speed indicator, the compass with reflector, the inclinometer, the
motometers--to show the heat in each engine--and there, the switch to
throw on the gigantic searchlight, with the little electric wheel to
control its direction, as accurately as you would point a wand.