GENERAL INDEX.

A

Abernethy, James, I., 154.

Adamson, Daniel, I., 153.

AERONAUTICS:

The Aeroplane, Theory and Principles of, ni., 5-13.

Lessons from the kite, 5 ; " drift " and " lift," 5 ; experiments with sliders, 6 ; shape of supporting surfaces, 6; action of air on curved aeroplane, 7 ; disposition of planes, 7; monoplanes and biplanes, 7; " aspect ratio," 7 ; considerations regarding the design of an aeroplane, 8 ; power needed to support -an aeroplane, 8; maintenance of stability, 9; centre of pressure, 9; front elevators, 9; automatic stability, 11"; fixed tails, 11 ; rear elevators, 11 ; lateral stability, 11 ; Voisin vertical curtains, 12 ; various auxiliary devices, 12; Wrights' apparatus for maintaining stability automatically, 12; the gyroscope a possible means of stabilizing, 12; influence of speed on stability, 12, 13.