Aeronautical World, Dec. 1902

“The set or angle of the aeroplanes will be

altered and controlled by levers which will

regulate the force of compressed air which

actuates them in order to deflect the aeroplanes

so as to incline or steer a circular course with-

out shifting the position of the ballast or aero-

naut. The tail or rudder will likewise be low-

ered or raised by means of compressed air con-

trolled levers.