[40] Bierling, Juristische Prinzipienlehre (Freiburg i. B., 1894-98, 2 vols.).

[41] Sidgwick, History of Ethics, London, 1892, p. III sq.

[42] A. Bonucci, La derogabilità del diritto naturale nella Scolastica, Perugia, 1906.

[43] Hist. remarks in dissert., De casuisticae theologiae originibus, locis atque praestantia (together with De Ligorio, Theol. mor., ed. cit., pp. xxiv-lxxvi).

[44] In Theol. mor. i. 10-24.

[45] Cathrein, Moralphilosophie,4 i. 428-437.

[46] Probabilismus vindicatus (Freiburg, Bk. i., 1906).

[47] See above, p. [405]; cf. also Krit. d. rein. Vern. pp. 10-11 n.

[48] Gründl. d. Naturr. introd. § iii. n.

[49] Werke, sect, iii., vol. ii., pp. 418-445; cf. G. Mayer, Die Lehre vom Erlaubten in der Gesch. d. Ethik seit Schleiermacher, Leipzig, 1899.