foolscap he turned to me, saying,
"Listen to this, Jack," and while the German agent stood biting his lips
in chagrin at being discovered at the eleventh hour, my friend read
aloud the spy's report, as follows:

"The upper plane of the Kershaw aeroplane is somewhat curved,
with an upward curve at the front. The side planes are composed
of a light framework covered with a number of small squares of
some light material, each stretched on a light frame hinged to
the main frame at the rear end of each. To the front end is
fastened a strong silken cord. These cords are all fastened at
their lower ends to a large ring. To this is attached a wire
rope, which passes over a pulley-wheel at the end of a species
of outrigger, and thence into the cigar-like body of the car.
From what I have observed when the machine is in flight, it is
evident to me that the steersman (who sits at the fore part of
the car) is able to manipulate these by means of levers, so
that the numerous flaps forming the surface of the side planes
can be opened and closed at will.

"Thus suppose the machine to be diving; slackening these ropes,
the pressure of the air underneath causes the flaps to open. As
soon as this happens their inclination upwards tends to make
the machine rise so long as the propellers are driving her
forward, the angle of ascent being controlled by the angle to
which they are allowed to open. If the machine inclines to lean
over to right or left, the opening and closing of the flaps on one
side or the other can be used to counteract it and restore the
balance. With all kept tightly closed she can go forward or dive.
With them open, and engines stopped, she dives quickly. The rudder
is of box-kite form, and fastened to the after end of the
cigar-like car, which apparently contains the engines, petrol
tanks, etc., and enough air space to render the machine buoyant
when water-borne. The propellers, which are placed on hollow
shafts, whose bearings are supported on horizontal braces
between the two V-shaped aluminium lattice girders attaching
the planes to the car, are driven by separate endless chains,
which come up out of the centre of the cylinder. They seem to
be made either of aluminium, or more probably magnalium.

"My drawing has rather exaggerated the diameter o