[147] Ibid. XII. 46.
[148] Ad Att. XII. 45, §1.
[149] Über Cicero's Akademika, p. 4.
[150] Cf. Ad Att. XII. 12, §2, where there is a distinct mention of the first two books.
[151] Ibid. XIII. 12, §3.
[152] Ibid. XIII. 19, §4.
[153] Ibid. XIII. 21, §§4, 5; 22, §3.
[154] II. §2.
[155] De Fin. Praef. p. lvii. ed. 2.
[156] Ad Att. XIII. 12, §3; 16, §1.