[15] Zimmermann, op. cit. pp. 302-309; v. Stein, Entstehung d. n. Ästh. p. 113.
[16] Geschichte der Kunst des Altertums, 1764 (in Werke, Stuttgart, 1847, vol. i.), bk. iv. ch. 2, § 51, p. 131.
[17] Op. cit. § 22, pp. 131-132.
[18] Op. cit. § 23, p. 132.
[19] Geschichte, § 19, pp. 130-131.
[20] Op. cit. bk. iv. ch. ii. § 24.
[21] Geschichte, bk. v. chs. ii. and vi.
[22] Letter of January 2, 1778, Opere, Rome, 1787 (reprinted Milan, 1836), ii. pp. 315-316.
[23] Opere, i. p. 206.
[24] Riflessioni sulla bellezza e sul gusto della pittura, in Opere, i. pp. 95, 100, 102-103.