XV. For the life of De Sanctis and the bibliography of his works see Scritti varî, ed. Croce, ii. pp. 267-308, also the volume In memoria di Fr. de S. edited by M. Mandalari, Naples, 1884.

On De Sanctis as literary critic, P. Villari, Commemorazione: A. C. de Meis, Commem., in the above-mentioned vol. In memoria: Marc Monnier in Revue des Deux Mondes, April I, 1884: Pio Ferrieri, Fr. de S. e la critica letteraria, Milan, 1888: B. Croce, La critica letteraria, Rome, 1896, ch. 5; Fr. de S. e i suoi critici recenti (in Atti dell' Accad. Pontan. vol. xxviii. reprinted in Scritti varî, append, ii. 309-352), and prefs. to vols, already quoted, La lett. ital. nel sec. XIX, and Scritti varî; De Sanctis e Schopenhauer, in Atti della Pontaniana, xxxii. 1902: Enr. Cocchia, II pensiero critico di Fr. de S. nell' arte e nella politica, Naples, 1899: G. A. Borgese, op. cit. last chapter and passim.

XVI. On the last phase of metaphysical Æsthetic, G. Neudecker, Studien z. Geschichte d. deutschen Ästhetik s. Kant, Würzburg, 1878, which discusses and criticises more particularly Vischer (self-criticism), Zimmermann, Lotze, Köstlin, Siebeck, Fechner and Deutinger. On Zimmermann, von Hartmann, op. cit. pp. 267-304: Bonatelli, in Nuova Antologia, October 1867. On Lotze, Fritz Kogel, Lotzes Ästhetik, Göttingen, 1886: A. Matragrin, Essai sur l'esthétique de Lotze, Paris, 1901. On Köstlin, von Hartmann, pp. 304-317. On Schasler, see the same, pp. 248-252, also Bosanquet, pp. 414-424. On Hartmann, Ad. Faggi, Ed. H. e l' estetica tedesca, Florence, 1895. On Vischer see M. Diez, Fried. Vischer u. d. ästh. Formalismus, Stuttgart, 1889.

For French and English æstheticians, besides Menendez y Pelayo, op. cit., on Ruskin, see J. Milsand, L'Esthétique anglaise, étude sur J. Ruskin, Paris, 1864: R. de la Sizeranne, Ruskin et la religion de la beauté, 3rd ed., Paris, 1898; cf. part iii. On Fornari, V. Imbriani, Vito Fornari estetico (reprinted in Studî letterarî e bizzarri e satiriche, ed. Croce, Bari, 1907). On Tari see Nic. Gallo, Antonio Tari, studio critico, Palermo, 1884: Croce, in Critica, v. (1907), pp. 357-361; also in pref. to vol.: A. Tari, saggi di estetica e metafisica, Bari, 1910.

XVII. For positivist Æsthetic see Menendez y Pelayo, op. cit. iv. (1st ed.) vol. ii. pp. 120-136, 326-369: N. Gallo, La scienza dell' arte, Turin, 1887, chs. 6-8, pp. 162-216.

XVIII. On Kirchmann, von Hartmann, pp. 253-265. For various recent German æstheticians, Hugo Spitzer, Kritische Studien z. Ästhet. der Gegenwart, Leipzig, 1897. On Nietzsche, Ettore G. Zoccoli, Fred. Nietzsche, Modena, 1898, pp. 268-344: Jul. Zeitler, Nietzsches Ästhetik, Leipzig, 1900. On Flaubert, A. Fusco, La teoria dell' arte in G. F., Naples, 1907: cf. Critica, vi. (1908), pp. 125-134. For books on Æsthetic published during the last decade of the nineteenth century see Luc. Arréat, Dix années de philosophie, 1891-1900, Paris, 1901, pp. 74-116. A few remarks on contemporary Æsthetic are made by K. Groos in Die Philosophie im Beginn. des XXen Jahrh., ed. by W. Windelband, Heidelberg, 1904-1905. For latest books on Æsthetic see Critica, ed. B. Croce (Naples), from 1903 onward, which publishes reviews of them. There is also a review, started in 1906, published at Stuttgart (ed. F. Enke), Zeitschrift für Ästhetik und allgemeine Kunstwissenschaft, edited by Max Dessoir.

XIX. The history of particular problems is usually omitted, or, at best, erroneously treated in histories of Æsthetic: for example, see the difficulty experienced by Ed. Müller, Gesch., cit., ii. pref. pp. vi-vii, in connecting his treatment of the history of Rhetoric with that of Poetics. Some writers attach Rhetoric to the individual arts or to artistic technique; others treat the doctrines of the modification of beauty and of natural beauty (in the metaphysical sense) as special problems; others, again, discuss the kinds or classifications in art in an incidental manner, without seeking to incorporate them in the principal æsthetic problem.

§ 1. On the history of Rhetoric in the ancient sense see Rich. Volkmann, Die Rhetorik der Griechen und Römer in systematischer Übersicht dargestellt, 2nd ed., Leipzig, 1885, of capital importance: A. Ed. Chaignet, La Rhétorique et son histoire, Paris, 1888; rich in material, but ill-arranged and with the preconception that Rhetoric is still a defensible body of science. For special treatment see Ch. Benoist, Essai historique sur les premiers manuels d'invention oratoire, jusqu'à Aristote, Paris, 1846: Georg Thiele, Hermagoras, ein Beitrag z. Geschichte d. Rhetorik, Strasburg, 1893. There is no history of rhetoric in modern times. For criticism of Vives and other Spaniards see Menendez y Pelayo, op. cit. iii. pp. 211-300 (2nd ed.). For Patrizzi see B. Croce, F. Patrizzi e la critica della rettorica antica, in the vol. of Studî in honour of A. Graf, Bergamo, 1903 (Probl. d. est. pp. 297-308).

For Rhetoric as theory of literary form in antiquity see Volkmann, op. cit. pp. 393-566: Chaignet, op. cit. pp. 413-539: also Egger, passim, and Saintsbury, bks. i. ii. For purposes of comparison see Paul Reynaud, La Rhétorique sanskrite exposée dans son développement historique et ses rapports avec la rhétorique classique, Paris, 1884. For the Middle Ages, Comparetti, Virgilio nel medio evo, vol. i., and Saintsbury, bk. iii. There is need for a work on modern Rhetoric in this sense also. For the form it assumed ultimately according to the theory of Gröber see B. Croce, Di alcuni principî di sintassi e stilistica psicologiche del Gröber, in Atti dell' Accad. Pontan. vol. xxix. 1899: K. Vossler, Literaturblatt für germ. u. roman. Philologie, 1900, N.I.: B. Croce, Le categorie rettoriche e il prof. Gröber, in Flegrea, April 1900: K. Vossler, Positivismo e idealismo nella scienza del linguaggio, Ital. trans. Bari, 1908, pp. 48-61 (cf. Probl. d. est. pp. 143-171). Very incomplete observations on the history of the concept of metaphor are made by A. Biese, Philosophie d. Metaphorischen, Hamburg-Leipzig, 1893, pp. 1-16; but this book has the merit of calling attention to the importance of the views and influence of Vico.