UBERRIMA FIDES. Perfect good faith; abundant good faith.

2. This phrase is used to express that a contract must be made in perfect good faith, concealing¹ nothing; as in the case of insurance, the insured must observe the most perfect good faith towards the insurer. 1 Story, Eq. Jur. §317; 3 Kent, Com. 283, 4th ed.

UKAAS, or UKASE. The name of a law or ordinance² emanating³ from the czar of Russia.

ULLAGE, com. law. When a cask is gauged⁴, what it wants of being full is called ullage.

ULTIMATUM⁵. The last proposition made in making a contract, a treaty, and the like; as, the government of the United States has given its ultimatum, has made the last proposition it will make to complete the proposed treaty. The word also means the result of a negotiation⁶, and it comprises the final determination of the parties concerned in the object in dispute.

ULTIMUM SUPPLICIUM. The last or extreme punishment; the penalty of death.

ULTIMUS HAERES. The last or remote heir; the lord. So called in contra-dis-tinction to the haeredes proximus, (q. v.) and the haeredes remotiores. (q. v.) Dalr Feud⁷. Pr. 110.

UMPIRAGE. The decision of an umpire. This word is used for the judgment⁸ of an umpire, as the word award is employed to designate that of arbitrators.

UMPIRE. A person selected by two or more arbitrators. When they are authorize⁹ to do so by the submission¹⁰ of the parties, and they cannot agree as to the subject-matter referred to them, whose duty it is to decide the matter in dispute. Sometimes the term is applied¹¹ to a single arbitrator, selected by the parties themselves. Kyd on Awards, 6, 75, 77 Caldw. on Arb. 38; Dane's Ab. Index, h. t.; 3 Vin. Ab. 93; Com. Dig. Arbitrament, F; 4 Dall. 271, 432; 4 Sco. N. S. 378; Bouv. Inst. Index, h. t.