Wing ascends when body descends, and vice versâ, [159]
Wing during its vibrations produces a cross pulsation, [148]
Wing vibrates unequally with reference to a given line, [150], [231]
Wing, compound rotation of, [149]
Wing a lever of the third order, [103]
Wing acts on yielding fulcra, [8], [104], [165]
Wings, their form, etc., all wings screws, structurally and functionally, [136]
Wing capable of change of form in all its parts, [147]
Wing-area variable and in excess, [124]
Wing-area decreases as the size and weight of the volant animal increases, [132]