I. Georg, a German mineralogist and physician, horn at Glauchau, Saxony, March 24, 1490, died in Chemnitz, Nov. 21, 1555. His name was originally Bauer (peasant), of which he adopted the Latin equivalent. He was at first rector of a school in Zwickau, afterward studied medicine at Leipsic, devoted himself to metallurgy, and in 1531, on the invitation of Duke Maurice, settled at Chemnitz. He attempted to reduce mineralogy and metallurgy to a science, and introduced considerable improvements in the previously rude art of mining. He first made chemical analyses of the different earths. His mind was, however, deeply tinged with the superstitions of his age. Having renounced Protestantism before his death, his body was refused burial in Chemnitz. He wrote Be Re Metallica, De Ortu et Causis Suhterraneorum, and Be Mensuris et Ponderibus Romanorum atque Graecorum.
II. Johann Friedrich, a German musician and composer, born near Altenburg, Jan. 4, 1720, died in Berlin, Nov. 12, 1774. He studied music under Sebastian Bach, was chapelmaster of Frederick the Great, and wrote several operas, among them "Iphigenia in Tauris." He was husband of the vocalist Mme. Molteni.
III. Johannes (originally Schnitter or Schneider), a German theologian, born in Eisleben, whence he is called Magister Islebius, April 10, 1492, died in Berlin, Sept. 22, 1566. He studied at Wittenberg and Leipsic, and acquired the friendship and esteem of Luther, who in 1525 sent him to Frankfort-on-the-Main, to institute Protestant worship there. On his return he was parish priest of Eisleben, and here he commenced that Antinomian controversy which he subsequently renewed from his professorial chair in Wittenberg (1536-'8), and for which he was dismissed from that university. He next became chaplain and general superintendent to the elector of Brandenburg. He wrote several theological works, as well as an account of the common German proverbs.
IV. Rudolf, an eminent scholar, born in Groningen in 1442 or 1443, died in Heidelberg, Oct. 28, 1485. He travelled in France and Italy, and won the esteem and patronage of Ercole d'Este, duke of Ferrara. On his return he was chosen professor of philosophy at the university of Heidelberg. He wrote various works of a miscellaneous character, the most remarkable of which, perhaps, is an essay entitled Tractatm de In-ventione Dialectica, in which he devotes considerable space to the discussion of the ability of deaf mutes to acquire such knowledge of language as to be able to converse with others by writing. He was among the first to introduce the study of Greek into Germany, and gave lectures on Greek literature at Worms and Heidelberg.