Reference may be made to Berolzheimer, System der Rechts- und Wirthschaftsphilosophie, II, §§ 13-16 (World's Legal Philosophies, 46-77); Hildenbrand, Geschichte und System der Rechts- und Staatsphilosophie, §§ 1-121. Cicero (B. C. 106-43), De Legibus. Reference may be made to Berolzheimer, System der Rechts- und Wirthschaftsphilosophie, II, §§ 17-20 (World's Legal Philosophies, 78-92); Hildenbrand, Geschichte und System der Rechts- und Staatsphilosophie, §§ 131-135, 143-147; Voigt, Das Ius Naturale, aequum et bonum und Ius Gentium der Römer, I, §§ 16, 35-41, 44-64, 89-96. Thomas Aquinas (1225 or 1227-1274), Summa Theologiae. Convenient translation of the parts relating to law in Aquinas Ethicus. Reference may be made to Berolzheimer, System der Rechts- und Wirthschaftsphilosophie, II, §§ 21-23 (World's Legal Philosophies, 93-111). Oldendorp, Iuris naturalis gentium et ciuilis [Greek: eisagôgê] (1539). Hemmingius (Henemingsen) De Iure naturale apodictica methodus (1562). Winckler, Principiorum iuris libri V (1615). These are collected conveniently in Kaltenborn, Die Vorläufer des Hugo Grotius. Reference may be made to Berolzheimer, System der Rechts- und Wirthschaftsphilosophie, II, § 24 (World's Legal Philosophies, 112-114); Hinrichs, Geschichte der Rechts- und Staatsprincipien seit der Reformation, I, 1-60; Gierke, Johannes Althusius, 2 ed., 18-49, 142-162, 321. Soto, De justitia et iure (1589). Suarez, De legibus ac deo legislatore (1619). Reference may be made to Figgis, Studies of Political Thought from Gerson to Grotius, Lect. V. Grotius, De iure belli et pacis (1625). Whewell's edition with an abridged translation is convenient. Pufendorf, De jure naturae et gentium (1672). Kennet's translation (1703) may be found in several editions. Burlamaqui, Principes du droit naturel (1747). Nugent's translation is convenient. Wolff, Institutiones juris naturae et gentium (1750). Rutherforth, Institutes of Natural Law (1754-1756). Vattel, Le droit des gens, Préliminaires (1758). There are many translations of Vattel. Rousseau, Contrat social (1762). Tozer's translation is convenient. Blackstone, Commentaries on the Laws of England, Introduction, sect. II (1765). Reference may be made to Berolzheimer, System der Rechts- und Wirthschaftsphilosophie, II, §§ 25-27, 29 (World's Legal Philosophies, 115-134, 141-156); Hinrichs, Geschichte der Rechts- und Staatsprincipien seit der Reformation, I, 60-274, II, III, 1-318; Korkunov, General Theory of Law, transl. by Hastings, § 7; Charmont, La renaissance du droit naturel, 10-43. Hobbes, Leviathan (1651). Spinoza, Ethica (1674). ----, Tractatus theologico-politicas (1670). Elwes' translation of the two last in Bohn's Libraries must be used with caution. Bentham, Principles of Morals and Legislation (1780).