On the 11th of May 1820 he took his doctor's degree; in the same year he qualified as Privatdozent at the university of Erlangen.
His earlier papers were mostly concerned with crystallography, and the reputation they gained him led to his appointment as Privatdozent at Konigsberg, where in 1828 he became extraordinary, and in 1829 ordinary, professor of mineralogy and physics.
1832), became in 1858 Privatdozent, and in 1863 extraordinary professor of mathematics at Halle.
In 1847 he began to act as Privatdozent in the university, and founded with Reinhardt the Archiv fiir pathologische Anatomie and Physiologic, which, after his collaborator's death in 1852, he carried on alone, and in 1848 he went as a member of a government commission to investigate an outbreak of typhus in upper Silesia.
In 1867 he became privatdozent in Berlin University, and in the following year was chosen professor of physics at the Zurich Polytechnic: then, after a year or two at Wurzburg, he was called in 1872 to Strassburg, where he took a great part in the organization of the new university, and was largely concerned in the erection of the Physical Institute.
In 1883 he went to Kiel, becoming Privatdozent, and there he began the studies in Maxwell's electro-magnetic theory which a few years later resulted in the discoveries that rendered his name famous.
At Jena, where he lectured as a Privatdozent at the university, he contributed to the Athenaeum the aphorisms and essays in which the principles of the Romantic school are most definitely stated.
For a short time he was a Privatdozent at Bonn, but in 1859 he was appointed director of the Mannheim Observatory.
In 1820 he became Privatdozent and in 1821 professor extraordinarius at Berlin; in 1827 professor at Konigsberg, in 1834 at Erlangen.
In 1835 he became Repetent, in 1838 Privatdozent and in 1841 professor extraordinarius in the theological faculty at Erlangen.
The time between his promotion to the doctorate and his habilitation as Privatdozent was occupied by researches undertaken for his Habilitationsschrift, by "Naturphilosophie," and by experimental work.
After studying at Leipzig and Bonn, where he was a pupil of Dahlmann, he established himself as a privatdozent at Leipzig, lecturing on history and politics.
In 1806, shortly after graduation, he became Repetent and Privatdozent in that university; and, as he was fond of afterwards relating, had Neander for his first pupil in Hebrew.
After attending the gymnasium of his native town, he studied at Marburg and Heidelberg, and then, attracted by the fame of Liebig, went in 1839 to Giessen, where he became a privatdozent in 1841, and professor of chemistry twelve years later.
His eldest SOH, Heinrich August Hahn (1821-1861), after studying theology at Breslau and Berlin, became successively Privatdozent at Breslau (1845), professor ad interim (1846) at Konigsberg on the death of Heinrich Havernick, professor extraordinarius (1851) and professor ordinarius (1860) at Greif swald.
It was with some natural hesitation that he, then a Privatdozent at Bonn, accepted the position, which may well have seemed rather a precarious one; but the difficulty was removed by his appointment as extraordinary professor at Bonn, with leave of absence for two years, so that he could resume his career in Germany if his English one proved unsatisfactory.
After taking his degree, he settled down in 1841 as Privatdozent in history at the university of Bonn.
Returning to Heidelberg he became Privatdozent in theology in 1829, and in 1831 published his Begriff der Kritik am Allen Testamente praktisch erartert, a study of Old Testament criticism in which he explained the critical principles of the grammatico-historical school, and his Des Propheten Jonas Orakel uber Moab, an exposition of the 1 5th and 16th chapters of the book of Isaiah attributed by him to the prophet Jonah mentioned in 2 Kings xiv.
Ordained to the priesthood in 1819, he was appointed to a curacy at Riedlingen, but speedily returned as "repetent" to Tubingen, where he became privatdozent in 1822, extraordinary professor of theology in 1826 and ordinary professor in 1828.
ADOLPH HAUSRATH (1837-1909), German theologian, was born at Karlsruhe on the 13th of January 1837 and was educated at Jena, GÃ¶ttingen, Berlin and Heidelberg, where he became Privatdozent in 1861, professor extraordinary in 1867 and ordinary professor in 1872.
In 1843 he founded the Jahrbilcher der Gegenwart, and became Privatdozent of philosophy and classical philology in Tubingen university.
After studying at Tubingen and Berlin, he became Privatdozent at Tubingen in 1847 and eventually (1861) professor of ecclesiastical and dogmatic history.
Educated at first at Eisenberg, he proceeded to Jena, where he studied philosophy under Hegel and Fichte and became privatdozent in 1802.
On his return he had proposed to settle as a Privatdozent at Heidelberg, but accepted the post of teacher of chemistry in the newly established technical school (Gewerbeschule) in Berlin (1825), where he remained till 1831.
He studied theology, ancient languages, and philosophy at Jena, became Privatdozent in the university of Wittenberg in 1716, and in 1720-21 visited Holland and England.
The dissertation by which Hegel qualified for the position of Privatdozent (De orbitis planetarum) was probably chosen under the influence of Schelling's philosophy of nature.
On his return to Halle, he acted for some time as Privatdozent, but in 1773 was appointed to a professorial chair; in 1775 he was translated to Jena, where the rest of his life was spent (though he received calls to other universities).
In 1840 he was Privatdozent of theology at Tubingen, in 1847 professor of theology at Bern, in 1849 professor of theology at Marburg, migrating soon afterwards to the faculty of philosophy as the result of disputes with the Clerical party.
Returning to Konigsberg in 1831 he established himself as a Privatdozent in Roman law, becoming two years later extraordinary, and in 1836 ordinary, professor in that faculty at the university.
In 1821 he was Privatdozent and in 1823 became professor extraordinarius of theology in Berlin, though he was at the same time active in the work of home and foreign missions.
In 1842 he was Privatdozent in the university of Berlin, and in .1843 he was called to become professor of church history and Biblical literature in the German Reformed Theological Seminary of Mercersburg, Pennsylvania, then the only seminary of that church in America.
In 1824 he joined the philosophical faculty of Berlin as a Privatdozent, and in 1825 he became a licentiate in theology, his theses being remarkable for their evangelical fervour and for their emphatic protest against every form of " rationalism," especially in questions of Old Testament criticism.
In 1825 he was received as Privatdozent at Bonn, and after three years he was made professor extraordinary.
Educated at GÃ¶ttingen and Berlin, he qualified himself at Bonn as Privatdozent in philosophy (1852).
In 1852 he became schoolmaster at Cologne; in 1855 privatdozent in philosophy at Bonn; in 1858 schoolmaster at Duisburg, resigning when the government forbade schoolmasters to take part in political agitation.
In 1869 he was Privatdozent at Zurich, and next year professor.
He became a Privatdozent in 1 819, and held professorships at Breslau (1822) and Halle (1824).
He studied at Tubingen, where he became doctor of philosophy in 1840 and Privatdozent in 1848.
In 1828 he became Privatdozent at Strassburg.
In 1889 he became privatdozent in the university of Berlin, and four years later was appointed extraordinary professor of divinity.