A Man standing firm on his Feet, either leans equally on both, or he loads one more than the other; if he tread on both alike, he either loads them with the Natural weight of his own Body alone, or to that he joins the additional weight of some Foreign Burthen; when they are laden with the Natural and the Accidental weight together, then the opposite extremes of his Members, are not found equally distant from the Jonctures of his Feet; and when he charges them simply with his bare Natural weight, these extremes of the opposite Members, will then, on the contrary, be seen equally removed from the Jonctures of the Feet. But of this kind of Equilibrium, I intend hereafter, a compleat Treatise.