[54]. Ibid., p. 58.
[55]. Ibid., p. 59.
31, [56]. Ch. 2, p. 60 ff.
[57]. Ch. 3, third opinion, p. 66 ff.
32, [58]. Ch. 4, pp. 80-82.
[59]. Pt. II, Introduction, p. 86.
[60]. Ibid., ch. 1, p. 88.
33, [61]. Pt. I, ch. 3, fifth opinion, p. 68.
[62]. Pt. II, ch. 2, p. 89.
34, [63]. Ibid., chs. 4-5, pp. 91-93.