THE AERONAUTICAL WORLD 147 threads instead of being rectilinear present a motion very close together, leaving behind the inclined plane a space where the air is motion- scries of lateral inflections which are preserved less, and only gives a smoky cloud. This space during all their course. These… … parison of them. The locomotion of the eel Wing under torsion. Motionless wing. (Fig. sy) shows the progression of undulations where the eddies or whirlpools occur is large of the body of the animal from head to tail. in proportion as the obstacle to the air current Lines are drawn to show the…
Aeronautics
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