Treatise, Book 111, Part II, Sect. Il (voL H, p

19. Treatise, Book III, Part II, Sect. III (vol. II, p. 274).

20. Ibid. (vol. Il, p. 276). Cf. llutcheson. Moral Philosophy, Book II, chap. VI : The accident of first occupation may be a trifling différence ; but a trifle may détermine the right to onc side, when there is no consiration to weigh against it on the other.