He also explained that all wings act upon a common principle, and that they present oblique, kite-like surfaces to the air, through which they pass much in the same way that an oar passes through water in sculling.
Sculling blades Two sets of sculling blades have been ordered to complete a new set of four pairs of sculling blades Two sets of sculling blades have been ordered to complete a new set of four pairs of sculling blades.
Sculling Blades Two sets of sculling blades have been ordered to complete a new set of four pairs of sculling blades.
Covered in branches, blades ordered they have all, understandably, gone back to their sculling boats.