[Regiomontanus], name adopted by Johann Müller, a celebrated German astronomer and mathematician, born at Königsberg, in Franconia; appointed professor of Astronomy in Vienna (1461); sojourned in Italy; settled in Nüremberg, where much of his best work was done; assisted Pope Sixtus IV. in reforming the Calendar; was made Bishop of Ratisbon; died at Rome; was regarded as the most learned astronomer of the time in Europe, and his works were of great value to Columbus and other early navigators (1436-1476).

[Registrar-General], an official appointed to superintend registration, specially of births, deaths, and marriages.

[Regium Donum], an annual grant formerly voted by Parliament to augment the stipends of the Presbyterian clergy in Ireland, discontinued from 1869.

[Regnard, Jean François], comic dramatist, born in Paris; inherited a fortune, which he increased by gambling; took to travelling, and was at 22 captured by an Algerine pirate, and when ransomed continued to travel; on his return to Paris wrote comedies, twenty-three in number, the best of them being "Le Joueur" and "Le Légataire," following closely in the steps of Molière; he was admired by Boileau (1656-1710).

[Regnault, Henri], French painter, born in Paris; son of following; a genius of great power and promise, of which several remarkable works by him are proof; volunteered in the Franco-German War, and fell at Buzenval (1843-1871).

[Regnault, Henri Victor], a noted French physicist, born at Aix-la-Chapelle; from being a Paris shopman he rose to a professorship in Lyons; important discoveries in organic chemistry won him election to the Academy of Sciences in 1840; lectured in the "Collège de France and the École Polytechnique;" became director of the imperial porcelain manufactory of Sèvres; did notable work in physics and chemistry, and was awarded medals by the Royal Society of London (1810-1878).

[Regnier, Mathurin], French poet, born at Chartres; led when young a life of dissipation; ranks high as a poet, but is most distinguished in satire, which is instinct with verve and vigour (1572-1613).

[Regulars], in the Romish Church a member of any religious order who has taken the vows of poverty, chastity, and obedience.

[Regulus], a Roman of the Romans; was twice over Consul, in 267 and 256 B.C.; defeated the Carthaginians, both by sea and land, but was at last taken prisoner; being sent, after five years' captivity, on parole to Rome with proposals of peace, dissuaded the Senate from accepting the terms, and despite the entreaties of his wife and children and friends returned to Carthage according to his promise, where he was subjected to the most excruciating tortures.