Weight contributes to flight, [112]
Weight, momentum, and power to a certain extent synonymous in flight, [114]
Wing of the bird and the extremity of the biped and quadruped are screws, structurally and functionally, [12], [136]
Wing in flight describes figure-of-8 curves, [12]
Wing during its action reverses its planes and describes a figure-of-8 track in space, [140]
Wing when advancing with the body describes looped and waved tracks, [143]
Wing, margins of, thrown into opposite curves during extension and flexion, [146]
Wing, tip of, describes an ellipse, [147]
Wing and body reciprocate in flight, and each describes a wave track, [12]
Wing moves in opposite curves to body, [168]