A name sometimes given to text-books containing the elementary principles of jurisprudence, arranged in an orderly and systematic manner. For example, the Institutes of Justinian, of Galus, of Lord Coke. Institutes of Gains. An elementary work of the Roman jurist Gains; important as having formed the foundation of the Institutes of Justinian, (g. vr) These Institutes were discovered by Niebuhr in 1816, in a codex rescriptus of the library of the cathedral chapter at Verona, and were first published at Berlin in 1820. Two editions have since appeared. Mackeld. Rom. Law,