Standing your body with the feet even, thrust the left half a foot forwards, then joining the right foot even with the left, you turn with speed to the left, lifting both heels, and keeping only the ball [petto? - lit. chest] of the left foot on the ground. Note that in turning you give it grace with the right arm, spreading the elbow somewhat. Spin two or three times, or as many as you can, and at the end you should be in prospettiva, in the same place, and give it a little grace in finishing by bending the knees a little, and keep the body straight.