Right and Left Hand.
Dr. Zinchinelli, of Padua, in an essay on the "Reasons why People use the Right Hand in preference to the Left," will not allow custom or imitation to be the cause. He affirms that the left arm cannot be in violent and continued motion without causing pain in the left side, because there is the seat of the heart and of the arterial system; and that, therefore, nature herself compels man to make use of the right hand.