That, in consequence, machines having wing planes, driven _against_ one inertia of air by screws acting in the line, of flight against another inertia of air, lose fifty per cent. of useful effect, besides exposing to a head wind the cross section of the stationary screw wing planes and the rotating screw discs; and supporting the dead weight of the wing planes, and having all the screw slip in the line of flight, and carrying slow and heavy engines. That as a result of these conclusions, the supporting and propelling power should be expressed in the rotation of screws combining both functions, the position of whose planes of rotation to a fixed horizontal line of direction determines the progress and speed of machine upon other lines. That the whole weight carried by the screws should be at all times exactly below the center of gravity of the plane of support, whether it be horizontal or inclined. That while the _permanently_ positioned weight, such as the engines, frame, holding screws, etc., may be rigidly connected to or around the screw plane of support, the variable positioned weight, such as the passenger and the car, should be connected by a _flexible joint_ to the said plane of support. Consequently, the car may oscillate without altering its weight position under center of supporting plane, thus avoiding an involuntary alteration of speed or direction of flight. That to steer a machine so constructed, it is merely necessary to move the point of attachment of car to _machine_ proper, out of the center of plane of support in the desired direction, and thus cause the plane of support or rotation of propellers to incline in that direction. That the reservoir of power, the boiler, etc., should be placed in the _car_, and steam carried to engines through joint connecting car with machine. That at present material exists, and power also, of sufficient lightness and strength to admit of a machine construction capable of a limited successful flight in any fair wind and direction. That such _machine_ once built, the finding of a _power_ for long flights will be easy, if not already close at hand in _electricity_. That the _easiest_ design for such _actual machine_ should be adopted, leaving the adaptation of the principles involved to the making of more perfect machines, to a time after the success of the _first_. That such design may be a propeller, and its engine at each end of a steel frame tube, supporting tube horizontally, a car to be supported by a universal joint from center of said tube, and the joint apparatus movable along the tube or a short distance transverse to it, to alter position of center of gravity. That the machine so built might traverse the water as well as air. * * * * * THE LONGHAIRED POINTER MYLORD.