[30] Sismondi's Essais, ii. 33.
[31] Sismondi's Essais, ii. 29, 30.
[32] Nicolai, dell' Agro Romano, ii. 30, 31.
[33] The rubbi is equal to two French hectares, or five English acres.
[34] Nicolai, iii 133.
[35] Ibid., c. in. 167. Et subseq.
[36] Sismondi's Essais, ii, 46, 47.
[37] Nicolai, dell' Agro Romano, iii. 167, 175.
[38] Nicolai, iii. 174, 178.
[39] Sismondi's Essais, ii, 56, 57.