st amount of
lifting area is secured above the center of gravity, and the greatest
weight carried below.

The ribs are made of laminated spruce, finished down to 1/2x3/4-inch
cross section dimensions, with a curvature of about 1 in 20, and
fastened to the beams with special aluminum castings. Number 2 Naiad
aeroplane cloth is used in covering the planes, with pockets sewn in for
the ribs.

Two combination elevating rudders are set up well in front, each having
18 square feet of supporting area. These rudders are arranged to work
in unison, independently, or in opposite directions. In the Model B
machine, there are also two small rear elevating rudders, which work in
unison with the front rudders. One vertical rudder of 10 square feet is
suspended in the rear of a small stationary horizontal plane in Model A,
while the vertical rudder on Model B is only 6 square feet in size. The
elevating rudders are arranged so as to act as stabilizing planes when
the machine is in flight. The wing tips are held in place with a special
two-piece casting which forms a hinge, and makes a quick detachable
joint. Wing tips are also used in balancing.

Model A is equipped with a Cameron 25-30 h. p., 4-cylinder, air-cooled
motor. On Model B a Holmes rotary 7-cylinder motor of 4x4-inch bore and
stroke is used.

Positive control is secured by use of the Stebbins-Geynet "auto-control"
system. A pull or push movement operates the elevating rudders, while
the balancing is done by means of side movements or slight turns. The
rear vertical rudder is manipulated by means of a foot lever.

New Cody Biplane.

Among the comparatively new biplanes is one constructed by Willard F.
Cody, of London, Eng., the principal distinctive feature of which is an
automatic control which works independently of the hand levers. For the
other control a long lever carrying a steering wheel furnishes all the
necessary control movements, there being no footwork at all. The lever
is universally jointed and when moved fore and aft operates the two
ailerons as if they were one; when the shaft is rotated it moves the
tail as a whole. The horizontal tail component is immovable. When the
lever is moved from side to side it works not only the ailerons and
the independent elevators, but also through a peculiar arrangement, the
vertical rear rudder as well.

The spread of the planes is 46 feet 6 inches and the width 6 feet 6
inches. The ailerons jut out 1 foot 6 inches on